diff --git a/bsp/Infineon/libraries/HAL_Drivers/drv_pwm.c b/bsp/Infineon/libraries/HAL_Drivers/drv_pwm.c
index e87d205f44..dd3a6a316e 100644
--- a/bsp/Infineon/libraries/HAL_Drivers/drv_pwm.c
+++ b/bsp/Infineon/libraries/HAL_Drivers/drv_pwm.c
@@ -153,7 +153,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
         return drv_pwm_get(htim, configuration);
 
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/airm2m/air105/libraries/rt_drivers/drv_spi.c b/bsp/airm2m/air105/libraries/rt_drivers/drv_spi.c
index 7765139372..4515b772f9 100644
--- a/bsp/airm2m/air105/libraries/rt_drivers/drv_spi.c
+++ b/bsp/airm2m/air105/libraries/rt_drivers/drv_spi.c
@@ -96,7 +96,7 @@ static rt_err_t spi_configure(struct rt_spi_device *device,
     RT_ASSERT(configuration != RT_NULL);
     rt_uint32_t spi_id = device->bus->parent.user_data;
     rt_uint8_t mode = configuration->mode & (RT_SPI_CPHA | RT_SPI_CPOL);
-    if (configuration->mode & RT_SPI_SLAVE) return RT_EINVAL;
+    if (configuration->mode & RT_SPI_SLAVE) return -RT_EINVAL;
     switch(spi_id)
     {
     case 0:
diff --git a/bsp/airm2m/air32f103/libraries/rt_drivers/drv_hwtimer.c b/bsp/airm2m/air32f103/libraries/rt_drivers/drv_hwtimer.c
index 82cea478be..5c95fe1bb5 100644
--- a/bsp/airm2m/air32f103/libraries/rt_drivers/drv_hwtimer.c
+++ b/bsp/airm2m/air32f103/libraries/rt_drivers/drv_hwtimer.c
@@ -171,7 +171,7 @@ static rt_err_t air32_hwtimer_control(struct rt_hwtimer_device *device, rt_uint3
         }
         else
         {
-            result = RT_EINVAL;
+            result = -RT_EINVAL;
         }
     }
     break;
diff --git a/bsp/allwinner_tina/drivers/drv_clock.c b/bsp/allwinner_tina/drivers/drv_clock.c
index 9fec431f4b..6a8accb93d 100644
--- a/bsp/allwinner_tina/drivers/drv_clock.c
+++ b/bsp/allwinner_tina/drivers/drv_clock.c
@@ -211,7 +211,7 @@ rt_err_t cpu_set_pll_clk(int clk)
     int p = 0, k = 1, m = 1, n = 0;
 
     if (clk == 0)
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     if (clk > 1152000000)
     {
@@ -244,7 +244,7 @@ rt_err_t audio_set_pll_clk(int clk)
     int m_temp = _24MHZ_ * 2;
 
     if ((clk > 200000000) || (clk < 20000000))
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     if (clk == 0)
     {
@@ -288,7 +288,7 @@ rt_err_t video_set_pll_clk(int clk)
     int m_temp = _24MHZ_;
 
     if ((clk > 600000000) || (clk < 30000000))
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     if (clk == 0)
     {
@@ -333,7 +333,7 @@ rt_err_t ve_set_pll_clk(int clk)
     int m_temp = _24MHZ_;
 
     if ((clk > 600000000) || (clk < 30000000))
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     if (clk == 0)
     {
@@ -377,7 +377,7 @@ rt_err_t periph_set_pll_clk(int clk)
     int n = 0, k = 0;
 
     if ((clk > 1800000000) || (clk < 200000000) || (clk == 0) || (clk % _24MHZ_ != 0))
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     n = clk / _24MHZ_;
 
@@ -413,7 +413,7 @@ rt_err_t periph_set_pll_clk(int clk)
 rt_err_t cpu_set_clk(int clk)
 {
     if (clk < _24MHZ_)
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     if (clk == cpu_get_clk())
         return RT_EOK;
@@ -446,7 +446,7 @@ rt_err_t bus_gate_clk_enalbe(enum bus_gate bus)
     else if (gate_reg == 0x02)
         CCU->bus_clk_gating2 |= (0x1 << offset);
     else
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     return RT_EOK;
 }
@@ -466,7 +466,7 @@ rt_err_t bus_gate_clk_disalbe(enum bus_gate bus)
     else if (gate_reg == 0x02)
         CCU->bus_clk_gating2 &= ~(0x1 << offset);
     else
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     return RT_EOK;
 }
@@ -486,7 +486,7 @@ rt_err_t bus_software_reset_disalbe(enum bus_gate bus)
     else if (gate_reg == 0x02)
         CCU->bus_soft_rst2 |= (0x1 << offset);
     else
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     return RT_EOK;
 }
@@ -506,7 +506,7 @@ rt_err_t bus_software_reset_enalbe(enum bus_gate bus)
     else if (gate_reg == 0x02)
         CCU->bus_soft_rst2 &= ~(0x1 << offset);
     else
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     return RT_EOK;
 }
@@ -519,7 +519,7 @@ rt_err_t mmc_set_clk(enum mmc_clk_id clk_id, int hz)
 
     if (hz < 0)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     if (hz == 0)
diff --git a/bsp/allwinner_tina/drivers/drv_gpio.c b/bsp/allwinner_tina/drivers/drv_gpio.c
index 099ea7621d..9617be1684 100644
--- a/bsp/allwinner_tina/drivers/drv_gpio.c
+++ b/bsp/allwinner_tina/drivers/drv_gpio.c
@@ -25,7 +25,7 @@
 /*********************************************************
 **   IO
 *********************************************************/
-int gpio_set_func(enum gpio_port port, enum gpio_pin pin, rt_uint8_t func)
+rt_err_t gpio_set_func(enum gpio_port port, enum gpio_pin pin, rt_uint8_t func)
 {
     rt_uint32_t addr;
     rt_uint32_t offset;
@@ -37,7 +37,7 @@ int gpio_set_func(enum gpio_port port, enum gpio_pin pin, rt_uint8_t func)
     if (func & 0x8)
     {
         LOG_W("[line]:%d There is a warning with parameter input", __LINE__);
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     addr = GPIOn_CFG_ADDR(port) + (pin / 8) * 4;
@@ -64,7 +64,7 @@ int gpio_set_value(enum gpio_port port, enum gpio_pin pin, rt_uint8_t value)
     if (value & 0xE)
     {
         LOG_W("[line]:%d There is a warning with parameter input", __LINE__);
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     addr = GPIOn_DATA_ADDR(port);
@@ -109,7 +109,7 @@ int gpio_set_pull_mode(enum gpio_port port,  enum gpio_pin pin, enum gpio_pull p
     if (pull & 0xC)
     {
         LOG_W("[line]:%d There is a warning with parameter input", __LINE__);
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     addr = GPIOn_PUL_ADDR(port);
@@ -137,7 +137,7 @@ int gpio_set_drive_level(enum gpio_port port, enum gpio_pin pin, enum gpio_drv_l
     if (level & 0xC)
     {
         LOG_W("[line]:%d There is a warning with parameter input", __LINE__);
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     addr = GPIOn_DRV_ADDR(port);
diff --git a/bsp/allwinner_tina/drivers/drv_gpio.h b/bsp/allwinner_tina/drivers/drv_gpio.h
index 74dd5a9be0..6f3ae75686 100644
--- a/bsp/allwinner_tina/drivers/drv_gpio.h
+++ b/bsp/allwinner_tina/drivers/drv_gpio.h
@@ -212,7 +212,7 @@ typedef struct tina_gpio *tina_gpio_t;
 
 #define GPIO ((tina_gpio_t)GPIO_BASE_ADDR)
 
-int gpio_set_func(enum gpio_port port, enum gpio_pin pin, rt_uint8_t func);
+rt_err_t gpio_set_func(enum gpio_port port, enum gpio_pin pin, rt_uint8_t func);
 int gpio_set_value(enum gpio_port port, enum gpio_pin pin, rt_uint8_t value);
 int gpio_get_value(enum gpio_port port, enum gpio_pin pin);
 int gpio_set_pull_mode(enum gpio_port port,  enum gpio_pin pin, enum gpio_pull pull);
diff --git a/bsp/apm32/libraries/Drivers/drv_pwm.c b/bsp/apm32/libraries/Drivers/drv_pwm.c
index ff712222ad..d710503de7 100644
--- a/bsp/apm32/libraries/Drivers/drv_pwm.c
+++ b/bsp/apm32/libraries/Drivers/drv_pwm.c
@@ -583,7 +583,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return drv_pwm_get(tmr, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/at32/libraries/rt_drivers/drv_pwm.c b/bsp/at32/libraries/rt_drivers/drv_pwm.c
index 339aeb1620..32e15af868 100644
--- a/bsp/at32/libraries/rt_drivers/drv_pwm.c
+++ b/bsp/at32/libraries/rt_drivers/drv_pwm.c
@@ -423,7 +423,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return drv_pwm_get(tmr_x, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/essemi/es32f0654/drivers/drv_hwtimer.c b/bsp/essemi/es32f0654/drivers/drv_hwtimer.c
index 09bf3c433a..498d6c3a46 100644
--- a/bsp/essemi/es32f0654/drivers/drv_hwtimer.c
+++ b/bsp/essemi/es32f0654/drivers/drv_hwtimer.c
@@ -305,7 +305,7 @@ static rt_err_t es32f0_hwtimer_control(rt_hwtimer_t *timer,
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/essemi/es32f0654/drivers/drv_pwm.c b/bsp/essemi/es32f0654/drivers/drv_pwm.c
index 765c8eecad..18ce1562c6 100644
--- a/bsp/essemi/es32f0654/drivers/drv_pwm.c
+++ b/bsp/essemi/es32f0654/drivers/drv_pwm.c
@@ -80,7 +80,7 @@ static rt_err_t es32f0_pwm_control(struct rt_device_pwm *device, int cmd, void *
         _ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC4EN_MSK;
     }
     else
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     switch (cmd)
     {
diff --git a/bsp/essemi/es32f369x/drivers/drv_hwtimer.c b/bsp/essemi/es32f369x/drivers/drv_hwtimer.c
index be50c26f61..5b26407252 100644
--- a/bsp/essemi/es32f369x/drivers/drv_hwtimer.c
+++ b/bsp/essemi/es32f369x/drivers/drv_hwtimer.c
@@ -301,7 +301,7 @@ static rt_err_t es32f3_hwtimer_control(rt_hwtimer_t *timer,
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/essemi/es32f369x/drivers/drv_pwm.c b/bsp/essemi/es32f369x/drivers/drv_pwm.c
index 0645370168..7683b7bd22 100644
--- a/bsp/essemi/es32f369x/drivers/drv_pwm.c
+++ b/bsp/essemi/es32f369x/drivers/drv_pwm.c
@@ -81,7 +81,7 @@ static rt_err_t es32f3_pwm_control(struct rt_device_pwm *device, int cmd, void *
         _ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC4EN_MSK;
     }
     else
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     switch (cmd)
     {
diff --git a/bsp/ft2004/drivers/drv_sdctrl.c b/bsp/ft2004/drivers/drv_sdctrl.c
index a501e41aac..a43a53a2c0 100644
--- a/bsp/ft2004/drivers/drv_sdctrl.c
+++ b/bsp/ft2004/drivers/drv_sdctrl.c
@@ -243,7 +243,7 @@ static void rthw_sdctrl_request(struct rt_mmcsd_host *host, struct rt_mmcsd_req
         if (pkg.cmd->cmd_code == 5 || pkg.cmd->cmd_code == 1)
         {
             rt_kprintf("cmd_code is not vaild %x \r\n", pkg.cmd->cmd_code);
-            pkg.cmd->err = RT_EINVAL;
+            pkg.cmd->err = -RT_EINVAL;
             goto _exit;
         }
 
diff --git a/bsp/gd32105c-eval/drivers/drv_gpio.c b/bsp/gd32105c-eval/drivers/drv_gpio.c
index 40cd8df4b5..2c64de1c8e 100644
--- a/bsp/gd32105c-eval/drivers/drv_gpio.c
+++ b/bsp/gd32105c-eval/drivers/drv_gpio.c
@@ -325,12 +325,12 @@ static rt_err_t _pin_attach_irq(struct rt_device *device, rt_int32_t pin,
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -364,12 +364,12 @@ static rt_err_t _pin_detach_irq(struct rt_device *device, rt_int32_t pin)
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -397,20 +397,20 @@ static rt_err_t _pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     if (enabled == PIN_IRQ_ENABLE)
     {
         hdr_index = bit2bitno(index->pin);
         if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         level = rt_hw_interrupt_disable();
         if (pin_irq_hdr_tab[hdr_index].pin == -1)
         {
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         irqmap = &pin_irq_map[hdr_index];
 
@@ -427,7 +427,7 @@ static rt_err_t _pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint
                 break;
             default:
                 rt_hw_interrupt_enable(level);
-                return RT_EINVAL;
+                return -RT_EINVAL;
         }
 
         rcu_periph_clock_enable(RCU_AF);
@@ -449,13 +449,13 @@ static rt_err_t _pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint
         irqmap = get_pin_irq_map(index->pin);
         if (irqmap == RT_NULL)
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         nvic_irq_disable(irqmap->irqno);
     }
     else
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/gd32107c-eval/drivers/drv_gpio.c b/bsp/gd32107c-eval/drivers/drv_gpio.c
index 40cd8df4b5..2c64de1c8e 100644
--- a/bsp/gd32107c-eval/drivers/drv_gpio.c
+++ b/bsp/gd32107c-eval/drivers/drv_gpio.c
@@ -325,12 +325,12 @@ static rt_err_t _pin_attach_irq(struct rt_device *device, rt_int32_t pin,
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -364,12 +364,12 @@ static rt_err_t _pin_detach_irq(struct rt_device *device, rt_int32_t pin)
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -397,20 +397,20 @@ static rt_err_t _pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     if (enabled == PIN_IRQ_ENABLE)
     {
         hdr_index = bit2bitno(index->pin);
         if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         level = rt_hw_interrupt_disable();
         if (pin_irq_hdr_tab[hdr_index].pin == -1)
         {
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         irqmap = &pin_irq_map[hdr_index];
 
@@ -427,7 +427,7 @@ static rt_err_t _pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint
                 break;
             default:
                 rt_hw_interrupt_enable(level);
-                return RT_EINVAL;
+                return -RT_EINVAL;
         }
 
         rcu_periph_clock_enable(RCU_AF);
@@ -449,13 +449,13 @@ static rt_err_t _pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint
         irqmap = get_pin_irq_map(index->pin);
         if (irqmap == RT_NULL)
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         nvic_irq_disable(irqmap->irqno);
     }
     else
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/gd32303e-eval/drivers/drv_gpio.c b/bsp/gd32303e-eval/drivers/drv_gpio.c
index a96cecc13e..b3b34b25bd 100644
--- a/bsp/gd32303e-eval/drivers/drv_gpio.c
+++ b/bsp/gd32303e-eval/drivers/drv_gpio.c
@@ -350,12 +350,12 @@ rt_err_t gd32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -389,12 +389,12 @@ rt_err_t gd32_pin_detach_irq(struct rt_device *device, rt_int32_t pin)
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -422,20 +422,20 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     if (enabled == PIN_IRQ_ENABLE)
     {
         hdr_index = bit2bitno(index->pin);
         if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         level = rt_hw_interrupt_disable();
         if (pin_irq_hdr_tab[hdr_index].pin == -1)
         {
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         irqmap = &pin_irq_map[hdr_index];
 
@@ -452,7 +452,7 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
                 break;
             default:
                 rt_hw_interrupt_enable(level);
-                return RT_EINVAL;
+                return -RT_EINVAL;
         }
 
         rcu_periph_clock_enable(RCU_AF);
@@ -474,13 +474,13 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
         irqmap = get_pin_irq_map(index->pin);
         if (irqmap == RT_NULL)
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         nvic_irq_disable(irqmap->irqno);
     }
     else
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/gd32350r-eval/drivers/drv_gpio.c b/bsp/gd32350r-eval/drivers/drv_gpio.c
index 7d15638d5f..e22b94645c 100644
--- a/bsp/gd32350r-eval/drivers/drv_gpio.c
+++ b/bsp/gd32350r-eval/drivers/drv_gpio.c
@@ -272,13 +272,13 @@ rt_err_t gd32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -313,13 +313,13 @@ rt_err_t gd32_pin_detach_irq(struct rt_device *device, rt_int32_t pin)
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -348,7 +348,7 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     if (enabled == PIN_IRQ_ENABLE)
@@ -356,14 +356,14 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
         hdr_index = bit2bitno(index->pin);
         if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
 
         level = rt_hw_interrupt_disable();
         if (pin_irq_hdr_tab[hdr_index].pin == -1)
         {
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
 
         irqmap = &pin_irq_map[hdr_index];
@@ -381,7 +381,7 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
                 break;
             default:
                 rt_hw_interrupt_enable(level);
-                return RT_EINVAL;
+                return -RT_EINVAL;
         }
 
         rcu_periph_clock_enable(RCU_CFGCMP);
@@ -403,13 +403,13 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
         irqmap = get_pin_irq_map(index->pin);
         if (irqmap == RT_NULL)
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         nvic_irq_disable(irqmap->irqno);
     }
     else
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/gd32e230k-start/drivers/drv_gpio.c b/bsp/gd32e230k-start/drivers/drv_gpio.c
index 752f1489d7..a9475c8c9b 100644
--- a/bsp/gd32e230k-start/drivers/drv_gpio.c
+++ b/bsp/gd32e230k-start/drivers/drv_gpio.c
@@ -245,12 +245,12 @@ rt_err_t gd32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -284,12 +284,12 @@ rt_err_t gd32_pin_detach_irq(struct rt_device *device, rt_int32_t pin)
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     hdr_index = bit2bitno(index->pin);
     if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     level = rt_hw_interrupt_disable();
@@ -317,20 +317,20 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     if (enabled == PIN_IRQ_ENABLE)
     {
         hdr_index = bit2bitno(index->pin);
         if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map))
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         level = rt_hw_interrupt_disable();
         if (pin_irq_hdr_tab[hdr_index].pin == -1)
         {
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         irqmap = &pin_irq_map[hdr_index];
 
@@ -347,7 +347,7 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
                 break;
             default:
                 rt_hw_interrupt_enable(level);
-                return RT_EINVAL;
+                return -RT_EINVAL;
         }
 
         //rcu_periph_clock_enable(RCU_AF);
@@ -369,13 +369,13 @@ rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_
         irqmap = get_pin_irq_map(index->pin);
         if (irqmap == RT_NULL)
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         nvic_irq_disable(irqmap->irqno);
     }
     else
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/hc32/libraries/hc32_drivers/drv_can.c b/bsp/hc32/libraries/hc32_drivers/drv_can.c
index d2770144ec..211adc81b2 100644
--- a/bsp/hc32/libraries/hc32_drivers/drv_can.c
+++ b/bsp/hc32/libraries/hc32_drivers/drv_can.c
@@ -160,7 +160,7 @@ static rt_err_t _can_config(struct rt_can_device *can, struct can_configure *cfg
     int32_t ret = CAN_Init(p_can_dev->instance, &p_can_dev->ll_init);
     if (ret != LL_OK)
     {
-        rt_ret = RT_EINVAL;
+        rt_ret = -RT_EINVAL;
     }
 
     return rt_ret;
diff --git a/bsp/hc32/libraries/hc32_drivers/drv_pwm_tmra.c b/bsp/hc32/libraries/hc32_drivers/drv_pwm_tmra.c
index 9f7fdaf76e..2798741697 100644
--- a/bsp/hc32/libraries/hc32_drivers/drv_pwm_tmra.c
+++ b/bsp/hc32/libraries/hc32_drivers/drv_pwm_tmra.c
@@ -209,7 +209,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return drv_pwm_get(TMRAx, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/hc32/libraries/hc32_drivers/drv_spi.c b/bsp/hc32/libraries/hc32_drivers/drv_spi.c
index d3a84c3c8c..a24d932065 100644
--- a/bsp/hc32/libraries/hc32_drivers/drv_spi.c
+++ b/bsp/hc32/libraries/hc32_drivers/drv_spi.c
@@ -156,7 +156,7 @@ static rt_err_t hc32_spi_init(struct hc32_spi *spi_drv, struct rt_spi_configurat
     /* SI/SO pin shared */
     if (cfg->mode & RT_SPI_3WIRE)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     else
     {
diff --git a/bsp/hpmicro/libraries/drivers/drv_gpio.c b/bsp/hpmicro/libraries/drivers/drv_gpio.c
index 520dfa1824..94304fd53c 100644
--- a/bsp/hpmicro/libraries/drivers/drv_gpio.c
+++ b/bsp/hpmicro/libraries/drivers/drv_gpio.c
@@ -297,7 +297,7 @@ static rt_err_t hpm_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_u
     }
     else
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/hpmicro/libraries/drivers/drv_rtc.c b/bsp/hpmicro/libraries/drivers/drv_rtc.c
index 114ad7a07b..a70d27ada1 100644
--- a/bsp/hpmicro/libraries/drivers/drv_rtc.c
+++ b/bsp/hpmicro/libraries/drivers/drv_rtc.c
@@ -86,7 +86,7 @@ static rt_err_t hpm_rtc_control(rt_device_t dev, int cmd, void *args)
             hpm_rtc_set_timestamp(*(time_t *)args);
             break;
         default:
-            err = RT_EINVAL;
+            err = -RT_EINVAL;
             break;
     }
 
diff --git a/bsp/hpmicro/libraries/drivers/drv_spi.c b/bsp/hpmicro/libraries/drivers/drv_spi.c
index 7dd6def0d7..55f91d3c38 100644
--- a/bsp/hpmicro/libraries/drivers/drv_spi.c
+++ b/bsp/hpmicro/libraries/drivers/drv_spi.c
@@ -73,7 +73,7 @@ static rt_err_t hpm_spi_configure(struct rt_spi_device *device, struct rt_spi_co
 
     if (cfg->data_width != 8 && cfg->data_width != 16 && cfg->data_width != 32)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     spi_master_get_default_timing_config(&timing_config);
diff --git a/bsp/hpmicro/libraries/drivers/drv_usb.c b/bsp/hpmicro/libraries/drivers/drv_usb.c
index 1d00550e0b..fd64d369e4 100644
--- a/bsp/hpmicro/libraries/drivers/drv_usb.c
+++ b/bsp/hpmicro/libraries/drivers/drv_usb.c
@@ -93,7 +93,7 @@ rt_err_t hpm_usb_control(rt_device_t dev, int cmd, void *args)
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/hpmicro/libraries/drivers/drv_wdt.c b/bsp/hpmicro/libraries/drivers/drv_wdt.c
index 5b21102680..f999139042 100644
--- a/bsp/hpmicro/libraries/drivers/drv_wdt.c
+++ b/bsp/hpmicro/libraries/drivers/drv_wdt.c
@@ -207,7 +207,7 @@ static rt_err_t hpm_wdog_control(rt_watchdog_t *wdt, int cmd, void *args)
         hpm_wdog_close(wdt);
         break;
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/imxrt/libraries/drivers/drv_gpio.c b/bsp/imxrt/libraries/drivers/drv_gpio.c
index f5d0812d55..dc61760eb2 100644
--- a/bsp/imxrt/libraries/drivers/drv_gpio.c
+++ b/bsp/imxrt/libraries/drivers/drv_gpio.c
@@ -774,7 +774,7 @@ static rt_err_t imxrt_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt
     }
     else
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/imxrt/libraries/drivers/drv_pwm.c b/bsp/imxrt/libraries/drivers/drv_pwm.c
index 1a4f0042ab..c73044af26 100644
--- a/bsp/imxrt/libraries/drivers/drv_pwm.c
+++ b/bsp/imxrt/libraries/drivers/drv_pwm.c
@@ -144,7 +144,7 @@ static rt_err_t imxrt_drv_pwm_control(struct rt_device_pwm *device, int cmd, voi
     case PWM_CMD_GET:
         return imxrt_drv_pwm_get(device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
@@ -422,7 +422,7 @@ static rt_err_t imxrt_drv_qtmr_control(struct rt_device_pwm *device, int cmd, vo
     case PWM_CMD_GET:
         return imxrt_drv_qtmr_get(device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/imxrt/libraries/drivers/drv_spi.c b/bsp/imxrt/libraries/drivers/drv_spi.c
index d0ce55b35d..3c1ad39888 100644
--- a/bsp/imxrt/libraries/drivers/drv_spi.c
+++ b/bsp/imxrt/libraries/drivers/drv_spi.c
@@ -279,7 +279,7 @@ static rt_err_t spi_configure(struct rt_spi_device *device, struct rt_spi_config
 
     if(cfg->data_width != 8 && cfg->data_width != 16 && cfg->data_width != 32)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     LPSPI_MasterGetDefaultConfig(&masterConfig);
diff --git a/bsp/imxrt/libraries/drivers/drv_wdt.c b/bsp/imxrt/libraries/drivers/drv_wdt.c
index 6010754c54..9c5b46313c 100644
--- a/bsp/imxrt/libraries/drivers/drv_wdt.c
+++ b/bsp/imxrt/libraries/drivers/drv_wdt.c
@@ -139,7 +139,7 @@ static rt_err_t imxrt_hp_wdog3_control(rt_watchdog_t *wdt, int cmd, void *args)
     }
     break;
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
@@ -274,7 +274,7 @@ static rt_err_t imxrt_hp_wdog_control(rt_watchdog_t *wdt, int cmd, void *args)
     }
     break;
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/loongson/ls2kdev/drivers/drv_pwm.c b/bsp/loongson/ls2kdev/drivers/drv_pwm.c
index 1b5c98755d..a688699100 100644
--- a/bsp/loongson/ls2kdev/drivers/drv_pwm.c
+++ b/bsp/loongson/ls2kdev/drivers/drv_pwm.c
@@ -107,7 +107,7 @@ static rt_err_t loongson_pwm_ioctl(struct rt_device_pwm *device, int cmd, void *
         rc = RT_ENOSYS;
         break;
     default:
-        rc = RT_EINVAL;
+        rc = -RT_EINVAL;
         break;
     }
     return rc;
diff --git a/bsp/lpc55sxx/Libraries/drivers/drv_pwm.c b/bsp/lpc55sxx/Libraries/drivers/drv_pwm.c
index 0f8a4bb16a..e48a231f80 100644
--- a/bsp/lpc55sxx/Libraries/drivers/drv_pwm.c
+++ b/bsp/lpc55sxx/Libraries/drivers/drv_pwm.c
@@ -239,7 +239,7 @@ static rt_err_t lpc_drv_pwm_control(struct rt_device_pwm *device, int cmd, void
     case PWM_CMD_GET:
         return lpc_drv_pwm_get(device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c b/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c
index 2a627bb986..bbe75ac236 100644
--- a/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c
+++ b/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c
@@ -116,7 +116,7 @@ static rt_err_t lpc_rtc_control(rt_device_t dev, int cmd, void *args)
         break;
 
         default:
-            return RT_EINVAL;
+            return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/lpc55sxx/Libraries/drivers/drv_wdt.c b/bsp/lpc55sxx/Libraries/drivers/drv_wdt.c
index 67524be683..206182fa41 100644
--- a/bsp/lpc55sxx/Libraries/drivers/drv_wdt.c
+++ b/bsp/lpc55sxx/Libraries/drivers/drv_wdt.c
@@ -204,7 +204,7 @@ static rt_err_t lpc_wwdt_control(rt_watchdog_t *wdt, int cmd, void *args)
     }
     break;
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/n32/libraries/n32_drivers/drv_adc.c b/bsp/n32/libraries/n32_drivers/drv_adc.c
index 8d17f0d86f..92a00d8dea 100644
--- a/bsp/n32/libraries/n32_drivers/drv_adc.c
+++ b/bsp/n32/libraries/n32_drivers/drv_adc.c
@@ -92,7 +92,7 @@ static rt_err_t n32_adc_enabled(struct rt_adc_device *device, rt_uint32_t channe
 {
     if (channel > ADC_CH_18)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     return RT_EOK;
 }
@@ -104,7 +104,7 @@ static rt_err_t n32_adc_convert(struct rt_adc_device *device, rt_uint32_t channe
 
     if (channel > ADC_CH_18)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     config = (struct n32_adc_config *)(device->parent.user_data);
 
diff --git a/bsp/n32/libraries/n32_drivers/drv_wdt.c b/bsp/n32/libraries/n32_drivers/drv_wdt.c
index 0b043d2ef4..d4de0d3d72 100644
--- a/bsp/n32/libraries/n32_drivers/drv_wdt.c
+++ b/bsp/n32/libraries/n32_drivers/drv_wdt.c
@@ -151,7 +151,7 @@ static rt_err_t n32_wdt_control(rt_watchdog_t *wdt, int cmd, void *args)
             break;
 
         default:
-            return RT_EINVAL;
+            return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/n32g452xx/Libraries/rt_drivers/drv_pwm.c b/bsp/n32g452xx/Libraries/rt_drivers/drv_pwm.c
index 22b79a6fbe..af0c2e4fbe 100644
--- a/bsp/n32g452xx/Libraries/rt_drivers/drv_pwm.c
+++ b/bsp/n32g452xx/Libraries/rt_drivers/drv_pwm.c
@@ -314,7 +314,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return drv_pwm_get(pwm_dev, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/nrf5x/libraries/drivers/drv_gpio.c b/bsp/nrf5x/libraries/drivers/drv_gpio.c
index 0d262cd83f..4d1f4db537 100644
--- a/bsp/nrf5x/libraries/drivers/drv_gpio.c
+++ b/bsp/nrf5x/libraries/drivers/drv_gpio.c
@@ -356,7 +356,7 @@ const static struct rt_pin_ops _nrf5x_pin_ops =
     RT_NULL,
 };
 
-int rt_hw_pin_init(void)
+rt_err_t rt_hw_pin_init(void)
 {
     nrfx_err_t err_code;
 
@@ -366,11 +366,11 @@ int rt_hw_pin_init(void)
     switch(err_code)
     {
         case NRFX_ERROR_INVALID_STATE:
-            return RT_EINVAL;
+            return -RT_EINVAL;
         case NRFX_SUCCESS:
             return RT_EOK;
         default:
-            return RT_ERROR;;
+            return -RT_ERROR;;
     }
 
 }
diff --git a/bsp/nrf5x/libraries/drivers/drv_gpio.h b/bsp/nrf5x/libraries/drivers/drv_gpio.h
index 0985c079c8..3e4b63c453 100644
--- a/bsp/nrf5x/libraries/drivers/drv_gpio.h
+++ b/bsp/nrf5x/libraries/drivers/drv_gpio.h
@@ -35,18 +35,10 @@ struct pin_index
 {
     int index;
     NRF_GPIO_Type *gpio;//NRF_P0 or NRF_P1
-    uint32_t pin;
+    rt_base_t pin;
 };
 
-static void nrf5x_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value);
-static int nrf5x_pin_read(rt_device_t dev, rt_base_t pin);
-static void nrf5x_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode);
-static rt_err_t nrf5x_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
-                                     rt_uint32_t mode, void (*hdr)(void *args), void *args);
-static rt_err_t nrf5x_pin_dettach_irq(struct rt_device *device, rt_int32_t pin);
-static rt_err_t nrf5x_pin_irq_enable(struct rt_device *device, rt_base_t pin,
-                                     rt_uint32_t enabled);
-int rt_hw_pin_init(void);
+rt_err_t rt_hw_pin_init(void);
 
 #endif /* __DRV_GPIO_H__ */
 
diff --git a/bsp/nrf5x/libraries/drivers/drv_pwm.c b/bsp/nrf5x/libraries/drivers/drv_pwm.c
index d71e4883a4..84cc72a678 100644
--- a/bsp/nrf5x/libraries/drivers/drv_pwm.c
+++ b/bsp/nrf5x/libraries/drivers/drv_pwm.c
@@ -212,7 +212,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return drv_pwm_get(p_mcu, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_adc.c b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_adc.c
index 5e463be51d..93e82dd297 100644
--- a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_adc.c
+++ b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_adc.c
@@ -66,7 +66,7 @@ static rt_err_t gd32_adc_enabled(struct rt_adc_device *device, rt_uint32_t chann
 {
     if (channel > ADC_CHANNEL_17)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     return RT_EOK;
 }
@@ -78,7 +78,7 @@ static rt_err_t gd32_adc_convert(struct rt_adc_device *device, rt_uint32_t chann
 
     if (channel > ADC_CHANNEL_17)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     config = (struct gd32_adc_config *)(device->parent.user_data);
 
diff --git a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_gpio.c b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_gpio.c
index 779f4a7bb8..538ecb2c8a 100644
--- a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_gpio.c
+++ b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_gpio.c
@@ -379,7 +379,7 @@ static rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
             break;
         default:
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
 
         /* connect EXTI line to  GPIO pin */
@@ -404,7 +404,7 @@ static rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
         irqmap = get_pin_irq_map(index->pin);
         if (irqmap == RT_NULL)
         {
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
         if ((irqmap->pinbit >= GPIO_PIN_5) && (irqmap->pinbit <= GPIO_PIN_9))
         {
diff --git a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_pwm.c b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_pwm.c
index b7af639c53..053cd4d510 100644
--- a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_pwm.c
+++ b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_pwm.c
@@ -71,7 +71,7 @@ static rt_err_t gd32_pwm_enable(struct rt_device_pwm *device, struct rt_pwm_conf
 
     if (configuration->channel > GD32_MAX_PWM_CHANNELS)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     if (!enable)
     {
@@ -143,12 +143,12 @@ static rt_err_t gd32_pwm_set(struct rt_device_pwm *device, struct rt_pwm_configu
     if (configuration->channel > GD32_MAX_PWM_CHANNELS)
     {
         LOG_I("max channel supported is %d\n", GD32_MAX_PWM_CHANNELS);
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     if (configuration->period < configuration->pulse)
     {
         LOG_I("period should > pulse \n");
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     pwmclk = gd32_get_pwm_clk(config->periph);
@@ -157,12 +157,12 @@ static rt_err_t gd32_pwm_set(struct rt_device_pwm *device, struct rt_pwm_configu
     period_cmp = (uint64_t)(1000000000 / pwmclk) * 10;
     if (configuration->period < period_cmp)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     period_cmp = (uint64_t)(1000000000 / (pwmclk / 65536 / 4)) * 65536;
     if (configuration->period > period_cmp)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     period_cmp = (uint64_t) pwmclk * configuration->period / 1000000000;
@@ -252,7 +252,7 @@ static rt_err_t gd32_pwm_control(struct rt_device_pwm *device, int cmd, void *ar
     case PWM_CMD_GET:
         return gd32_pwm_get(device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_rtc.c b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_rtc.c
index 1bda274950..795d0b7167 100644
--- a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_rtc.c
+++ b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_rtc.c
@@ -127,7 +127,7 @@ static rt_err_t gd32_rtc_control(rt_device_t dev, int cmd, void *args)
     break;
 
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_wdt.c b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_wdt.c
index f0b340edac..820cc25989 100644
--- a/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_wdt.c
+++ b/bsp/nuclei/libraries/gd32vf103/HAL_Drivers/drv_wdt.c
@@ -124,7 +124,7 @@ static rt_err_t gd32_wdog_control(rt_watchdog_t *wdt, int cmd, void *args)
     }
     break;
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     return RT_EOK;
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_bpwm.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_bpwm.c
index 607b62f03b..defb016b1b 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_bpwm.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_bpwm.c
@@ -205,7 +205,7 @@ static rt_err_t nu_bpwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return nu_bpwm_get(device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_pdma.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_pdma.c
index 492c35ba5f..837e2c02d9 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_pdma.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_pdma.c
@@ -284,7 +284,7 @@ exit_pdma_channel_terminate:
 
 static rt_err_t nu_pdma_timeout_set(int i32ChannID, int i32Timeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
         goto exit_nu_pdma_timeout_set;
@@ -355,7 +355,7 @@ exit_nu_pdma_channel_allocate:
 
 rt_err_t nu_pdma_channel_free(int i32ChannID)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (! nu_pdma_inited)
         goto exit_nu_pdma_channel_free;
@@ -373,7 +373,7 @@ exit_nu_pdma_channel_free:
 
 rt_err_t nu_pdma_callback_register(int i32ChannID, nu_pdma_cb_handler_t pfnHandler, void *pvUserData, uint32_t u32EventFilter)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
         goto exit_nu_pdma_callback_register;
@@ -461,7 +461,7 @@ exit_nu_pdma_channel_memctrl_get:
 
 rt_err_t nu_pdma_channel_memctrl_set(int i32ChannID, nu_pdma_memctrl_t eMemCtrl)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_t *psPdmaChann = &nu_pdma_chn_arr[i32ChannID - NU_PDMA_CH_Pos];
 
 
@@ -518,7 +518,7 @@ rt_err_t nu_pdma_desc_setup(int i32ChannID, nu_pdma_desc_t dma_desc, uint32_t u3
     uint32_t u32SrcCtl = 0;
     uint32_t u32DstCtl = 0;
 
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!dma_desc)
         goto exit_nu_pdma_desc_setup;
@@ -714,7 +714,7 @@ static void _nu_pdma_transfer(int i32ChannID, uint32_t u32Peripheral, nu_pdma_de
 
 rt_err_t nu_pdma_transfer(int i32ChannID, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, int32_t i32TransferCnt, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
@@ -744,7 +744,7 @@ exit_nu_pdma_transfer:
 
 rt_err_t nu_pdma_sg_transfer(int i32ChannID, nu_pdma_desc_t head, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
     if (!head)
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_qspi.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_qspi.c
index e8726de726..6fd9d2d8c9 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_qspi.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_qspi.c
@@ -111,7 +111,7 @@ static rt_err_t nu_qspi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_qspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_spi.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_spi.c
index bc8e1cdcca..37fc5bf03a 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_spi.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_spi.c
@@ -130,7 +130,7 @@ static rt_err_t nu_spi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_spi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_timer.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_timer.c
index ec2b1d72cb..64f3c6f92e 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_timer.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_timer.c
@@ -191,7 +191,7 @@ static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_uart.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_uart.c
index c5943fd490..fec24a731f 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_uart.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_uart.c
@@ -442,7 +442,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported data length\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -459,7 +459,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported stop bit\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -480,7 +480,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported parity\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_uspi.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_uspi.c
index a8f726568e..d443db3c10 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_uspi.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_uspi.c
@@ -168,7 +168,7 @@ static rt_err_t nu_uspi_bus_configure(struct rt_spi_device *device,
     if (!(configuration->data_width == 8  ||
             configuration->data_width == 16))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_uuart.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_uuart.c
index 6277c8054d..dfb530dc06 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_uuart.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_uuart.c
@@ -224,7 +224,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -241,7 +241,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -262,7 +262,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
     /* Reset this module */
diff --git a/bsp/nuvoton/libraries/m031/rtt_port/drv_wdt.c b/bsp/nuvoton/libraries/m031/rtt_port/drv_wdt.c
index fabcb92760..bba739a0fd 100644
--- a/bsp/nuvoton/libraries/m031/rtt_port/drv_wdt.c
+++ b/bsp/nuvoton/libraries/m031/rtt_port/drv_wdt.c
@@ -371,7 +371,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -385,7 +385,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (wanted_sec == 0)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -396,7 +396,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_bpwm.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_bpwm.c
index dd6a8b0692..c159f14577 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_bpwm.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_bpwm.c
@@ -205,7 +205,7 @@ static rt_err_t nu_bpwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return nu_bpwm_get(device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_pdma.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_pdma.c
index 35398a42ab..376e20cbdb 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_pdma.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_pdma.c
@@ -285,7 +285,7 @@ exit_pdma_channel_terminate:
 
 static rt_err_t nu_pdma_timeout_set(int i32ChannID, int i32Timeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     PDMA_T *PDMA = NULL;
 
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
@@ -359,7 +359,7 @@ exit_nu_pdma_channel_allocate:
 
 rt_err_t nu_pdma_channel_free(int i32ChannID)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (! nu_pdma_inited)
         goto exit_nu_pdma_channel_free;
@@ -377,7 +377,7 @@ exit_nu_pdma_channel_free:
 
 rt_err_t nu_pdma_callback_register(int i32ChannID, nu_pdma_cb_handler_t pfnHandler, void *pvUserData, uint32_t u32EventFilter)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
         goto exit_nu_pdma_callback_register;
@@ -469,7 +469,7 @@ exit_nu_pdma_channel_memctrl_get:
 
 rt_err_t nu_pdma_channel_memctrl_set(int i32ChannID, nu_pdma_memctrl_t eMemCtrl)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_t *psPdmaChann = &nu_pdma_chn_arr[i32ChannID - NU_PDMA_CH_Pos];
 
 
@@ -527,7 +527,7 @@ rt_err_t nu_pdma_desc_setup(int i32ChannID, nu_pdma_desc_t dma_desc, uint32_t u3
     uint32_t u32SrcCtl = 0;
     uint32_t u32DstCtl = 0;
 
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!dma_desc)
         goto exit_nu_pdma_desc_setup;
@@ -727,7 +727,7 @@ static void _nu_pdma_transfer(int i32ChannID, uint32_t u32Peripheral, nu_pdma_de
 
 rt_err_t nu_pdma_transfer(int i32ChannID, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, int32_t i32TransferCnt, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     PDMA_T *PDMA = NU_PDMA_GET_BASE(i32ChannID);
 
@@ -759,7 +759,7 @@ exit_nu_pdma_transfer:
 
 rt_err_t nu_pdma_sg_transfer(int i32ChannID, nu_pdma_desc_t head, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
     if (!head)
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_qspi.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_qspi.c
index 465be2fe52..8bb0f19c2e 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_qspi.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_qspi.c
@@ -111,7 +111,7 @@ static rt_err_t nu_qspi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_qspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_scuart.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_scuart.c
index 3d83615002..5379a591a8 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_scuart.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_scuart.c
@@ -213,7 +213,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial, struct seri
 
     default:
         LOG_E("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -230,7 +230,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial, struct seri
 
     default:
         LOG_E("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -251,7 +251,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial, struct seri
 
     default:
         LOG_E("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_spi.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_spi.c
index 0e2d1fcd00..17effc356a 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_spi.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_spi.c
@@ -190,7 +190,7 @@ static rt_err_t nu_spi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_spi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_timer.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_timer.c
index b4d5472ee8..ebc11343ae 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_timer.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_timer.c
@@ -198,7 +198,7 @@ static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_uart.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_uart.c
index 6c27efb396..120b9ea6e7 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_uart.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_uart.c
@@ -396,7 +396,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported data length\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -413,7 +413,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported stop bit\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -434,7 +434,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported parity\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_uspi.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_uspi.c
index 0d0e57daf6..bc46a7709a 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_uspi.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_uspi.c
@@ -168,7 +168,7 @@ static rt_err_t nu_uspi_bus_configure(struct rt_spi_device *device,
     if (!(configuration->data_width == 8  ||
             configuration->data_width == 16))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_uuart.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_uuart.c
index 0317956b86..9a2dfd6280 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_uuart.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_uuart.c
@@ -233,7 +233,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -250,7 +250,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -271,7 +271,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
     /* Reset this module */
diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/drv_wdt.c b/bsp/nuvoton/libraries/m2354/rtt_port/drv_wdt.c
index 13ff9c13b6..a7d3036ad5 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/drv_wdt.c
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/drv_wdt.c
@@ -370,7 +370,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -384,7 +384,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (wanted_sec == 0)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -395,7 +395,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_dac.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_dac.c
index de19d6f8a3..a3b2b1d491 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_dac.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_dac.c
@@ -118,7 +118,7 @@ static rt_err_t nu_dac_convert(struct rt_dac_device *device, rt_uint32_t channel
 
     if (channel >= psNuDAC->max_chn_num)
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_dac_convert;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_eadc.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_eadc.c
index 8ad2c11745..25259639d5 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_eadc.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_eadc.c
@@ -131,7 +131,7 @@ static rt_err_t nu_get_eadc_value(struct rt_adc_device *device, rt_uint32_t chan
     if (channel >= psNuEADC->max_chn_num)
     {
         *value = 0xFFFFFFFF;
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_get_eadc_value;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_pdma.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_pdma.c
index f0a931a9a4..c2d4bbb93f 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_pdma.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_pdma.c
@@ -341,7 +341,7 @@ exit_pdma_channel_terminate:
 
 static rt_err_t nu_pdma_timeout_set(int i32ChannID, int i32Timeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     PDMA_T *PDMA = NULL;
     uint32_t u32ModChannId;
 
@@ -425,7 +425,7 @@ exit_nu_pdma_channel_allocate:
 
 rt_err_t nu_pdma_channel_free(int i32ChannID)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (! nu_pdma_inited)
         goto exit_nu_pdma_channel_free;
@@ -446,7 +446,7 @@ exit_nu_pdma_channel_free:
 
 rt_err_t nu_pdma_filtering_set(int i32ChannID, uint32_t u32EventFilter)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     if (nu_pdma_check_is_nonallocated(i32ChannID))
         goto exit_nu_pdma_filtering_set;
 
@@ -473,7 +473,7 @@ exit_nu_pdma_filtering_get:
 
 rt_err_t nu_pdma_callback_register(int i32ChannID, nu_pdma_chn_cb_t psChnCb)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_cb_t psChnCb_Current = RT_NULL;
 
     RT_ASSERT(psChnCb != RT_NULL);
@@ -595,7 +595,7 @@ exit_nu_pdma_channel_memctrl_get:
 
 rt_err_t nu_pdma_channel_memctrl_set(int i32ChannID, nu_pdma_memctrl_t eMemCtrl)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_t *psPdmaChann = &nu_pdma_chn_arr[i32ChannID - NU_PDMA_CH_Pos];
 
     if (nu_pdma_check_is_nonallocated(i32ChannID))
@@ -652,7 +652,7 @@ rt_err_t nu_pdma_desc_setup(int i32ChannID, nu_pdma_desc_t dma_desc, uint32_t u3
     uint32_t u32SrcCtl = 0;
     uint32_t u32DstCtl = 0;
 
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!dma_desc)
         goto exit_nu_pdma_desc_setup;
@@ -925,7 +925,7 @@ exit__nu_pdma_transfer_chain:
 
 rt_err_t nu_pdma_transfer(int i32ChannID, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, uint32_t u32TransferCnt, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     PDMA_T *PDMA = NU_PDMA_GET_BASE(i32ChannID);
     nu_pdma_desc_t head;
     nu_pdma_chn_t *psPdmaChann;
@@ -966,7 +966,7 @@ exit_nu_pdma_transfer:
 
 rt_err_t nu_pdma_sg_transfer(int i32ChannID, nu_pdma_desc_t head, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
     if (!head)
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_qspi.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_qspi.c
index 700a143251..58fc464405 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_qspi.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_qspi.c
@@ -129,7 +129,7 @@ static rt_err_t nu_qspi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_qspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_scuart.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_scuart.c
index daa4df9123..256d92d1a2 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_scuart.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_scuart.c
@@ -186,7 +186,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported data length\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -203,7 +203,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported stop bit\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -224,7 +224,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported parity\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_spi.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_spi.c
index 1d05afe9e9..1e547d9ce7 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_spi.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_spi.c
@@ -334,7 +334,7 @@ static rt_err_t nu_spi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_spi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_timer.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_timer.c
index e6fa0fe6d8..b9f4c7bbea 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_timer.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_timer.c
@@ -122,7 +122,7 @@ static void nu_timer_init(rt_hwtimer_t *timer, rt_uint32_t state)
 
 static rt_err_t nu_timer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     rt_uint32_t u32OpMode;
 
     nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer);
@@ -205,7 +205,7 @@ static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_uart.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_uart.c
index 153e8abee6..937154851b 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_uart.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_uart.c
@@ -577,7 +577,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported data length\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -594,7 +594,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported stop bit\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -615,7 +615,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported parity\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_uspi.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_uspi.c
index 213c839902..6317e0702e 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_uspi.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_uspi.c
@@ -147,7 +147,7 @@ static rt_err_t nu_uspi_bus_configure(struct rt_spi_device *device,
     if (!(configuration->data_width == 8  ||
             configuration->data_width == 16))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_uuart.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_uuart.c
index a0a138a019..11fc59e3e5 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_uuart.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_uuart.c
@@ -196,7 +196,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -213,7 +213,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported stop bit\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -234,7 +234,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported parity\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
     /* Reset this module */
diff --git a/bsp/nuvoton/libraries/m460/rtt_port/drv_wdt.c b/bsp/nuvoton/libraries/m460/rtt_port/drv_wdt.c
index 367ab63a45..1168fd9bff 100644
--- a/bsp/nuvoton/libraries/m460/rtt_port/drv_wdt.c
+++ b/bsp/nuvoton/libraries/m460/rtt_port/drv_wdt.c
@@ -385,7 +385,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -399,7 +399,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (wanted_sec == 0)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -410,7 +410,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_bpwm.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_bpwm.c
index 14c0b89479..b192871b4a 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_bpwm.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_bpwm.c
@@ -205,7 +205,7 @@ static rt_err_t nu_bpwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_GET:
         return nu_bpwm_get(device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_pdma.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_pdma.c
index 8fb4cca738..6248605995 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_pdma.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_pdma.c
@@ -314,7 +314,7 @@ exit_pdma_channel_terminate:
 
 static rt_err_t nu_pdma_timeout_set(int i32ChannID, int i32Timeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
         goto exit_nu_pdma_timeout_set;
@@ -385,7 +385,7 @@ exit_nu_pdma_channel_allocate:
 
 rt_err_t nu_pdma_channel_free(int i32ChannID)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (! nu_pdma_inited)
         goto exit_nu_pdma_channel_free;
@@ -403,7 +403,7 @@ exit_nu_pdma_channel_free:
 
 rt_err_t nu_pdma_callback_register(int i32ChannID, nu_pdma_cb_handler_t pfnHandler, void *pvUserData, uint32_t u32EventFilter)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
         goto exit_nu_pdma_callback_register;
@@ -491,7 +491,7 @@ exit_nu_pdma_channel_memctrl_get:
 
 rt_err_t nu_pdma_channel_memctrl_set(int i32ChannID, nu_pdma_memctrl_t eMemCtrl)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_t *psPdmaChann = &nu_pdma_chn_arr[i32ChannID - NU_PDMA_CH_Pos];
 
 
@@ -548,7 +548,7 @@ rt_err_t nu_pdma_desc_setup(int i32ChannID, nu_pdma_desc_t dma_desc, uint32_t u3
     uint32_t u32SrcCtl = 0;
     uint32_t u32DstCtl = 0;
 
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!dma_desc)
         goto exit_nu_pdma_desc_setup;
@@ -744,7 +744,7 @@ static void _nu_pdma_transfer(int i32ChannID, uint32_t u32Peripheral, nu_pdma_de
 
 rt_err_t nu_pdma_transfer(int i32ChannID, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, int32_t i32TransferCnt, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
@@ -774,7 +774,7 @@ exit_nu_pdma_transfer:
 
 rt_err_t nu_pdma_sg_transfer(int i32ChannID, nu_pdma_desc_t head, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
     if (!head)
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_qspi.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_qspi.c
index fe7624b6f4..b60f49eef4 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_qspi.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_qspi.c
@@ -130,7 +130,7 @@ static rt_err_t nu_qspi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_qspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_scuart.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_scuart.c
index 708435fef4..6090f9f8df 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_scuart.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_scuart.c
@@ -213,7 +213,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -230,7 +230,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -251,7 +251,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_spi.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_spi.c
index ce29d62347..254364ad62 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_spi.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_spi.c
@@ -190,7 +190,7 @@ static rt_err_t nu_spi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_spi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_timer.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_timer.c
index 456cbbc34a..37b885a093 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_timer.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_timer.c
@@ -190,7 +190,7 @@ static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_uart.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_uart.c
index 64b7f1dac0..72574d26b9 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_uart.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_uart.c
@@ -474,7 +474,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported data length\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -491,7 +491,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported stop bit\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -512,7 +512,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported parity\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_uspi.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_uspi.c
index f724a0ec20..6910085020 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_uspi.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_uspi.c
@@ -168,7 +168,7 @@ static rt_err_t nu_uspi_bus_configure(struct rt_spi_device *device,
     if (!(configuration->data_width == 8  ||
             configuration->data_width == 16))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_uuart.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_uuart.c
index 925b86ffad..d5772cb295 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_uuart.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_uuart.c
@@ -233,7 +233,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -250,7 +250,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
 
@@ -271,7 +271,7 @@ static rt_err_t nu_uuart_configure(struct rt_serial_device *serial, struct seria
 
     default:
         rt_kprintf("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uuart_configure;
     }
     /* Reset this module */
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_wdt.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_wdt.c
index ffe5f98a1a..d9bc0b3940 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_wdt.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_wdt.c
@@ -367,7 +367,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -381,7 +381,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (wanted_sec == 0)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -392,7 +392,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_adc.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_adc.c
index 1156803603..4514b613c6 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_adc.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_adc.c
@@ -329,7 +329,7 @@ static void nu_adc_touch_smpl(void *p)
 
 static rt_err_t _nu_adc_control(rt_device_t dev, int cmd, void *args)
 {
-    rt_err_t ret = RT_EINVAL ;
+    rt_err_t ret = -RT_EINVAL ;
     nu_adc_t psNuAdc = (nu_adc_t)dev;
     ADC_T  *adc = psNuAdc->base;
 
@@ -563,7 +563,7 @@ static rt_err_t nu_adc_convert(struct rt_adc_device *device, rt_uint32_t channel
 
     if (channel >= ADC_CH_NUM)
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_adc_convert;
     }
     else if ((ret = _nu_adc_control((rt_device_t)device, SWITCH_CH, (void *)channel)) != RT_EOK)
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_pdma.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_pdma.c
index 2304107cd3..b377672e81 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_pdma.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_pdma.c
@@ -330,7 +330,7 @@ static inline void nu_pdma_channel_reset(int i32ChannID)
 
 static rt_err_t nu_pdma_timeout_set(int i32ChannID, int i32Timeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     PDMA_T *PDMA = NULL;
     uint32_t u32ModChannId;
 
@@ -435,7 +435,7 @@ exit_nu_pdma_channel_allocate:
 
 rt_err_t nu_pdma_channel_free(int i32ChannID)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (! nu_pdma_inited)
         goto exit_nu_pdma_channel_free;
@@ -456,7 +456,7 @@ exit_nu_pdma_channel_free:
 
 rt_err_t nu_pdma_filtering_set(int i32ChannID, uint32_t u32EventFilter)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     if (nu_pdma_check_is_nonallocated(i32ChannID))
         goto exit_nu_pdma_filtering_set;
 
@@ -483,7 +483,7 @@ exit_nu_pdma_filtering_get:
 
 rt_err_t nu_pdma_callback_register(int i32ChannID, nu_pdma_chn_cb_t psChnCb)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_cb_t psChnCb_Current = RT_NULL;
 
     RT_ASSERT(psChnCb != RT_NULL);
@@ -630,7 +630,7 @@ exit_nu_pdma_channel_memctrl_get:
 
 rt_err_t nu_pdma_channel_memctrl_set(int i32ChannID, nu_pdma_memctrl_t eMemCtrl)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_t *psPdmaChann = &nu_pdma_chn_arr[i32ChannID - NU_PDMA_CH_Pos];
 
     if (nu_pdma_check_is_nonallocated(i32ChannID))
@@ -686,7 +686,7 @@ rt_err_t nu_pdma_desc_setup(int i32ChannID, nu_pdma_desc_t dma_desc, uint32_t u3
     uint32_t u32SrcCtl = 0;
     uint32_t u32DstCtl = 0;
 
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!dma_desc)
         goto exit_nu_pdma_desc_setup;
@@ -949,7 +949,7 @@ exit__nu_pdma_transfer_chain:
 
 rt_err_t nu_pdma_transfer(int i32ChannID, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, uint32_t u32TransferCnt, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     PDMA_T *PDMA = NU_PDMA_GET_BASE(i32ChannID);
     nu_pdma_desc_t head;
     nu_pdma_chn_t *psPdmaChann;
@@ -990,7 +990,7 @@ exit_nu_pdma_transfer:
 
 rt_err_t nu_pdma_sg_transfer(int i32ChannID, nu_pdma_desc_t head, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
     if (!head)
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_qspi.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_qspi.c
index 96cc4de799..45288cc032 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_qspi.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_qspi.c
@@ -128,7 +128,7 @@ static rt_err_t nu_qspi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_qspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_scuart.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_scuart.c
index a0541c360c..75a89f4bee 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_scuart.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_scuart.c
@@ -146,7 +146,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -163,7 +163,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -184,7 +184,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_spi.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_spi.c
index d4ff0621f9..9146e25d51 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_spi.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_spi.c
@@ -185,7 +185,7 @@ static rt_err_t nu_spi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_spi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_timer.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_timer.c
index 5b98e49718..fe590fec3b 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_timer.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_timer.c
@@ -171,7 +171,7 @@ static void nu_timer_init(rt_hwtimer_t *timer, rt_uint32_t state)
 
 static rt_err_t nu_timer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     rt_uint32_t u32OpMode;
 
     nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer);
@@ -254,7 +254,7 @@ static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_uart.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_uart.c
index 8c388b09ac..e3c2073118 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_uart.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_uart.c
@@ -639,7 +639,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         LOG_E("Unsupported data length.");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -656,7 +656,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         LOG_E("Unsupported stop bit.");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -677,7 +677,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         LOG_E("Unsupported parity.");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/ma35/rtt_port/drv_wdt.c b/bsp/nuvoton/libraries/ma35/rtt_port/drv_wdt.c
index cbacf45e9c..5c2ccb18cc 100644
--- a/bsp/nuvoton/libraries/ma35/rtt_port/drv_wdt.c
+++ b/bsp/nuvoton/libraries/ma35/rtt_port/drv_wdt.c
@@ -257,7 +257,7 @@ static rt_err_t nu_wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -269,7 +269,7 @@ static rt_err_t nu_wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -277,7 +277,7 @@ static rt_err_t nu_wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (wanted_sec == 0)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -289,7 +289,7 @@ static rt_err_t nu_wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_adc.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_adc.c
index eea201ea69..cf3a4f5e0c 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_adc.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_adc.c
@@ -330,7 +330,7 @@ static void nu_adc_touch_smpl(void *p)
 
 static rt_err_t _nu_adc_control(rt_device_t dev, int cmd, void *args)
 {
-    rt_err_t ret = RT_EINVAL ;
+    rt_err_t ret = -RT_EINVAL ;
     nu_adc_t psNuAdc = (nu_adc_t)dev;
     ADC_T  *adc = psNuAdc->base;
 
@@ -564,7 +564,7 @@ static rt_err_t nu_adc_convert(struct rt_adc_device *device, rt_uint32_t channel
 
     if (channel >= ADC_CH_NUM)
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_adc_convert;
     }
     else if ((ret = _nu_adc_control((rt_device_t)device, SWITCH_CH, (void *)channel)) != RT_EOK)
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_etimer.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_etimer.c
index 7c3b1578e4..e132600f95 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_etimer.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_etimer.c
@@ -147,7 +147,7 @@ static void nu_etimer_init(rt_hwtimer_t *timer, rt_uint32_t state)
 
 static rt_err_t nu_etimer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     rt_uint32_t u32OpMode;
 
     nu_etimer_t psNuETmr = NU_TIMER_DEVICE(timer);
@@ -230,7 +230,7 @@ static rt_err_t nu_etimer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *ar
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_pwm.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_pwm.c
index ce77b21aa8..f5278d63b9 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_pwm.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_pwm.c
@@ -223,7 +223,7 @@ uint32_t nu_pwm_config(uint32_t u32PwmBaseAddr, uint32_t u32ChannelNum, uint32_t
 static rt_err_t nu_pwm_set(struct rt_device_pwm *device, struct rt_pwm_configuration *config)
 {
     nu_pwm_t psNuPWM = (nu_pwm_t)device;
-    rt_err_t result = RT_EINVAL;
+    rt_err_t result = -RT_EINVAL;
     rt_uint32_t u32FreqInHz;   /* unit:Hz */
     rt_uint32_t u32PulseInHz;   /* unit:% */
 
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_qspi.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_qspi.c
index 9112677834..e0fb3a7f8b 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_qspi.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_qspi.c
@@ -137,7 +137,7 @@ static rt_err_t nu_qspi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_qspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_scuart.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_scuart.c
index ddf9f5f045..51258de5e6 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_scuart.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_scuart.c
@@ -156,7 +156,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -173,7 +173,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -194,7 +194,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_timer.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_timer.c
index 946da8a6f1..38ea1b9e49 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_timer.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_timer.c
@@ -150,7 +150,7 @@ static void nu_timer_init(rt_hwtimer_t *timer, rt_uint32_t state)
 
 static rt_err_t nu_timer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     rt_uint32_t u32OpMode;
 
     nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer);
@@ -233,7 +233,7 @@ static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_uart.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_uart.c
index ca7a03e8e3..05ae7e5f3c 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_uart.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_uart.c
@@ -300,7 +300,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -317,7 +317,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -338,7 +338,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_wdt.c b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_wdt.c
index cc77bd2b30..212a71fbc2 100644
--- a/bsp/nuvoton/libraries/n9h30/rtt_port/drv_wdt.c
+++ b/bsp/nuvoton/libraries/n9h30/rtt_port/drv_wdt.c
@@ -179,7 +179,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -193,7 +193,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (wanted_sec == 0)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -204,7 +204,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
diff --git a/bsp/nuvoton/libraries/nu_packages/SPINAND/spinand.c b/bsp/nuvoton/libraries/nu_packages/SPINAND/spinand.c
index d9f4628299..1f6caeab08 100644
--- a/bsp/nuvoton/libraries/nu_packages/SPINAND/spinand.c
+++ b/bsp/nuvoton/libraries/nu_packages/SPINAND/spinand.c
@@ -381,7 +381,7 @@ static rt_err_t spinand_status_register_write(struct rt_qspi_device *qspi, uint8
         break;
 
     default:
-        result = RT_EINVAL;
+        result = -RT_EINVAL;
         goto exit_spinand_status_register_write;
     }
 
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_adc.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_adc.c
index eea201ea69..cf3a4f5e0c 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_adc.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_adc.c
@@ -330,7 +330,7 @@ static void nu_adc_touch_smpl(void *p)
 
 static rt_err_t _nu_adc_control(rt_device_t dev, int cmd, void *args)
 {
-    rt_err_t ret = RT_EINVAL ;
+    rt_err_t ret = -RT_EINVAL ;
     nu_adc_t psNuAdc = (nu_adc_t)dev;
     ADC_T  *adc = psNuAdc->base;
 
@@ -564,7 +564,7 @@ static rt_err_t nu_adc_convert(struct rt_adc_device *device, rt_uint32_t channel
 
     if (channel >= ADC_CH_NUM)
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_adc_convert;
     }
     else if ((ret = _nu_adc_control((rt_device_t)device, SWITCH_CH, (void *)channel)) != RT_EOK)
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_etimer.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_etimer.c
index cf7ff232cd..93942edd54 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_etimer.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_etimer.c
@@ -161,7 +161,7 @@ static void nu_etimer_init(rt_hwtimer_t *timer, rt_uint32_t state)
 
 static rt_err_t nu_etimer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     rt_uint32_t u32OpMode;
 
     nu_etimer_t psNuETmr = NU_TIMER_DEVICE(timer);
@@ -244,7 +244,7 @@ static rt_err_t nu_etimer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *ar
         break;
 
     default:
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         break;
     }
 
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pdma.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pdma.c
index 4468a6744b..3448360855 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pdma.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pdma.c
@@ -249,7 +249,7 @@ exit_pdma_channel_terminate:
 
 static rt_err_t nu_pdma_timeout_set(int i32ChannID, int i32Timeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     PDMA_T *PDMA = NULL;
 
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
@@ -325,7 +325,7 @@ exit_nu_pdma_channel_allocate:
 
 rt_err_t nu_pdma_channel_free(int i32ChannID)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (! nu_pdma_inited)
         goto exit_nu_pdma_channel_free;
@@ -343,7 +343,7 @@ exit_nu_pdma_channel_free:
 
 rt_err_t nu_pdma_filtering_set(int i32ChannID, uint32_t u32EventFilter)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     if (!(nu_pdma_chn_mask & (1 << i32ChannID)))
         goto exit_nu_pdma_filtering_set;
 
@@ -370,7 +370,7 @@ exit_nu_pdma_filtering_get:
 
 rt_err_t nu_pdma_callback_register(int i32ChannID, nu_pdma_chn_cb_t psChnCb)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_cb_t psChnCb_Current = RT_NULL;
 
     RT_ASSERT(psChnCb != RT_NULL);
@@ -490,7 +490,7 @@ exit_nu_pdma_channel_memctrl_get:
 
 rt_err_t nu_pdma_channel_memctrl_set(int i32ChannID, nu_pdma_memctrl_t eMemCtrl)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_chn_t *psPdmaChann = &nu_pdma_chn_arr[i32ChannID - NU_PDMA_CH_Pos];
 
 
@@ -548,7 +548,7 @@ rt_err_t nu_pdma_desc_setup(int i32ChannID, nu_pdma_desc_t dma_desc, uint32_t u3
     uint32_t u32SrcCtl = 0;
     uint32_t u32DstCtl = 0;
 
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
 
     if (!dma_desc)
         goto exit_nu_pdma_desc_setup;
@@ -801,7 +801,7 @@ exit__nu_pdma_transfer_chain:
 
 rt_err_t nu_pdma_transfer(int i32ChannID, uint32_t u32DataWidth, uint32_t u32AddrSrc, uint32_t u32AddrDst, uint32_t u32TransferCnt, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     PDMA_T *PDMA = NU_PDMA_GET_BASE(i32ChannID);
     nu_pdma_desc_t head;
     nu_pdma_chn_t *psPdmaChann;
@@ -842,7 +842,7 @@ exit_nu_pdma_transfer:
 
 rt_err_t nu_pdma_sg_transfer(int i32ChannID, nu_pdma_desc_t head, uint32_t u32IdleTimeout_us)
 {
-    rt_err_t ret = RT_EINVAL;
+    rt_err_t ret = -RT_EINVAL;
     nu_pdma_periph_ctl_t *psPeriphCtl = NULL;
 
     if (!head)
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pwm.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pwm.c
index 9ebdfa518e..ab9222cf4e 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pwm.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_pwm.c
@@ -234,7 +234,7 @@ uint32_t nu_pwm_config(uint32_t u32PwmBaseAddr, uint32_t u32ChannelNum, uint32_t
 static rt_err_t nu_pwm_set(struct rt_device_pwm *device, struct rt_pwm_configuration *config)
 {
     nu_pwm_t psNuPWM = (nu_pwm_t)device;
-    rt_err_t result = RT_EINVAL;
+    rt_err_t result = -RT_EINVAL;
     rt_uint32_t u32FreqInHz;   /* unit:Hz */
     rt_uint32_t u32PulseInHz;   /* unit:% */
 
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_qspi.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_qspi.c
index 39108bbb72..186ba5d976 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_qspi.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_qspi.c
@@ -111,7 +111,7 @@ static rt_err_t nu_qspi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_qspi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_scuart.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_scuart.c
index 6867eb8827..c8fe989bd5 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_scuart.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_scuart.c
@@ -156,7 +156,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported data length");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -173,7 +173,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported stop bit");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
@@ -194,7 +194,7 @@ static rt_err_t nu_scuart_configure(struct rt_serial_device *serial,
 
     default:
         LOG_E("Unsupported parity");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_scuart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_spi.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_spi.c
index 7c1db7cf85..b3b764f724 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_spi.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_spi.c
@@ -155,7 +155,7 @@ static rt_err_t nu_spi_bus_configure(struct rt_spi_device *device,
             configuration->data_width == 24 ||
             configuration->data_width == 32))
     {
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_spi_bus_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_uart.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_uart.c
index afb1c75f7c..29be15e9e0 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_uart.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_uart.c
@@ -464,7 +464,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported data length\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -481,7 +481,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported stop bit\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
@@ -502,7 +502,7 @@ static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial
 
     default:
         rt_kprintf("Unsupported parity\n");
-        ret = RT_EINVAL;
+        ret = -RT_EINVAL;
         goto exit_nu_uart_configure;
     }
 
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_wdt.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_wdt.c
index d5b696c59f..d9a1ed6bd0 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_wdt.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_wdt.c
@@ -305,7 +305,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -319,7 +319,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (wanted_sec == 0)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
@@ -330,7 +330,7 @@ static rt_err_t wdt_control(rt_watchdog_t *dev, int cmd, void *args)
 
         if (args == RT_NULL)
         {
-            ret = RT_EINVAL;
+            ret = -RT_EINVAL;
             break;
         }
 
diff --git a/bsp/qemu-virt64-aarch64/drivers/drv_rtc.c b/bsp/qemu-virt64-aarch64/drivers/drv_rtc.c
index 2b26429dcf..019c5d5b0e 100644
--- a/bsp/qemu-virt64-aarch64/drivers/drv_rtc.c
+++ b/bsp/qemu-virt64-aarch64/drivers/drv_rtc.c
@@ -73,7 +73,7 @@ static rt_err_t pl031_rtc_control(rt_device_t dev, int cmd, void *args)
         pl031_write32(RTC_LR, *(time_t *)args);
         break;
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     return RT_EOK;
 }
diff --git a/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c b/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c
index 0b465b5763..e050dd93d8 100644
--- a/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c
+++ b/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c
@@ -244,7 +244,7 @@ static rt_err_t raspi_rtc_control(rt_device_t dev, int cmd, void *args)
         raspi_set_timestamp(*(time_t *)args);
         break;
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     return RT_EOK;
 }
diff --git a/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c b/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c
index d772614971..f6625f025a 100644
--- a/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c
+++ b/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c
@@ -88,7 +88,7 @@ static rt_err_t raspi_rtc_control(rt_device_t dev, int cmd, void *args)
         raspi_set_timestamp(*(time_t *)args);
         break;
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     return RT_EOK;
 }
diff --git a/bsp/rockchip/common/drivers/drv_gpio.c b/bsp/rockchip/common/drivers/drv_gpio.c
index 2fda98765a..860290cbc7 100644
--- a/bsp/rockchip/common/drivers/drv_gpio.c
+++ b/bsp/rockchip/common/drivers/drv_gpio.c
@@ -191,7 +191,7 @@ static rt_err_t pin_irq_enable(struct rt_device *dev, rt_base_t pin, rt_uint32_t
             break;
         default:
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
 
         HAL_GPIO_SetIntType(get_st_gpio(pin), get_st_pin(pin), mode);
diff --git a/bsp/synwit/swm320/drivers/drv_gpio.c b/bsp/synwit/swm320/drivers/drv_gpio.c
index d22dd8be2a..0c040b5aa4 100644
--- a/bsp/synwit/swm320/drivers/drv_gpio.c
+++ b/bsp/synwit/swm320/drivers/drv_gpio.c
@@ -412,7 +412,7 @@ static rt_err_t swm_pin_irq_enable(struct rt_device *device,
             EXTI_Init(gpio_obj->gpio, gpio_obj->pin, EXTI_LOW_LEVEL);
             break;
         default:
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
 
         level = rt_hw_interrupt_disable();
diff --git a/bsp/synwit/swm320/drivers/drv_pwm.c b/bsp/synwit/swm320/drivers/drv_pwm.c
index 6495340deb..546d4cddc4 100644
--- a/bsp/synwit/swm320/drivers/drv_pwm.c
+++ b/bsp/synwit/swm320/drivers/drv_pwm.c
@@ -291,7 +291,7 @@ static rt_err_t swm_pwm_control(struct rt_device_pwm *pwm_device, int cmd, void
     case PWM_CMD_GET:
         return swm_pwm_get(pwm_device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/synwit/swm320/drivers/drv_spi.c b/bsp/synwit/swm320/drivers/drv_spi.c
index 64eec472af..df8120d436 100644
--- a/bsp/synwit/swm320/drivers/drv_spi.c
+++ b/bsp/synwit/swm320/drivers/drv_spi.c
@@ -116,7 +116,7 @@ static rt_err_t swm_spi_configure(struct rt_spi_device *device,
 
     if (configure->mode & RT_SPI_3WIRE)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     if (configure->data_width == 8)
diff --git a/bsp/synwit/swm341/drivers/drv_gpio.c b/bsp/synwit/swm341/drivers/drv_gpio.c
index c0abfe10c4..d38a80eede 100644
--- a/bsp/synwit/swm341/drivers/drv_gpio.c
+++ b/bsp/synwit/swm341/drivers/drv_gpio.c
@@ -434,7 +434,7 @@ static rt_err_t swm_pin_irq_enable(struct rt_device *device,
             EXTI_Init(gpio_obj->gpio, gpio_obj->pin, EXTI_LOW_LEVEL);
             break;
         default:
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
 
         level = rt_hw_interrupt_disable();
diff --git a/bsp/synwit/swm341/drivers/drv_pwm.c b/bsp/synwit/swm341/drivers/drv_pwm.c
index 6306fa7312..2e9c9837d8 100644
--- a/bsp/synwit/swm341/drivers/drv_pwm.c
+++ b/bsp/synwit/swm341/drivers/drv_pwm.c
@@ -295,7 +295,7 @@ static rt_err_t swm_pwm_control(struct rt_device_pwm *pwm_device, int cmd, void
     case PWM_CMD_GET:
         return swm_pwm_get(pwm_device, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/synwit/swm341/drivers/drv_spi.c b/bsp/synwit/swm341/drivers/drv_spi.c
index 5cff92936e..3a1ad69848 100644
--- a/bsp/synwit/swm341/drivers/drv_spi.c
+++ b/bsp/synwit/swm341/drivers/drv_spi.c
@@ -118,7 +118,7 @@ static rt_err_t swm_spi_configure(struct rt_spi_device *device,
 
     if (configure->mode & RT_SPI_3WIRE)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 
     if (configure->data_width == 8)
diff --git a/bsp/ti/c28x/libraries/HAL_Drivers/drv_pwm.c b/bsp/ti/c28x/libraries/HAL_Drivers/drv_pwm.c
index 336e7f6e57..d05e9d6668 100644
--- a/bsp/ti/c28x/libraries/HAL_Drivers/drv_pwm.c
+++ b/bsp/ti/c28x/libraries/HAL_Drivers/drv_pwm.c
@@ -348,7 +348,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
     case PWM_CMD_DISABLE_IRQ:
         return drv_pwm_enable_irq((struct EPWM_REGS *)(pwm->pwm_regs), RT_FALSE);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/tm4c123bsp/libraries/Drivers/drv_pwm.c b/bsp/tm4c123bsp/libraries/Drivers/drv_pwm.c
index d365899a4d..345a5bd2c8 100644
--- a/bsp/tm4c123bsp/libraries/Drivers/drv_pwm.c
+++ b/bsp/tm4c123bsp/libraries/Drivers/drv_pwm.c
@@ -231,7 +231,7 @@ static rt_err_t tm4c123_pwm_control(struct rt_device_pwm *device, int cmd, void
     case PWM_CMD_GET:
         return drv_pwm_get(device->parent.parent.name, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/w60x/drivers/drv_pwm.c b/bsp/w60x/drivers/drv_pwm.c
index 9d73228ee2..07a9c3f661 100644
--- a/bsp/w60x/drivers/drv_pwm.c
+++ b/bsp/w60x/drivers/drv_pwm.c
@@ -113,7 +113,7 @@ static rt_err_t wm_pwm_control(struct rt_device_pwm *device, int cmd, void *arg)
     channel = configuration->channel - 1;
 
     if (channel > 4)
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     switch (cmd)
     {
@@ -134,7 +134,7 @@ static rt_err_t wm_pwm_control(struct rt_device_pwm *device, int cmd, void *arg)
     case PWM_CMD_GET:
         return wm_pwm_get(channel, configuration);
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
 }
 
diff --git a/bsp/w60x/drivers/drv_rtc.c b/bsp/w60x/drivers/drv_rtc.c
index 500201b68d..13fc00ea99 100644
--- a/bsp/w60x/drivers/drv_rtc.c
+++ b/bsp/w60x/drivers/drv_rtc.c
@@ -154,7 +154,7 @@ static rt_err_t wm_rtc_control(rt_device_t dev, int cmd, void *args)
         break;
 #endif
     default:
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     return RT_EOK;
 }
diff --git a/bsp/w60x/drivers/drv_wifi.c b/bsp/w60x/drivers/drv_wifi.c
index b7bc9eb459..5d6fb1b643 100644
--- a/bsp/w60x/drivers/drv_wifi.c
+++ b/bsp/w60x/drivers/drv_wifi.c
@@ -485,7 +485,7 @@ static rt_err_t drv_wlan_cfg_filter(struct rt_wlan_device *wlan, struct rt_wlan_
 {
     LOG_D("F:%s L:%d", __FUNCTION__, __LINE__);
 
-    return RT_EINVAL;/* not support */
+    return -RT_EINVAL;/* not support */
 }
 
 static rt_err_t drv_wlan_set_channel(struct rt_wlan_device *wlan, int channel)
diff --git a/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f10x.c b/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f10x.c
index 02a460e6d5..3bc934fc7b 100644
--- a/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f10x.c
+++ b/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f10x.c
@@ -367,12 +367,12 @@ rt_err_t ch32f1_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint8
     find = exti_line_irq_list_find(pin);
 
     if (find == RT_NULL)
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     item = pin_info_list_find(pin);
 
     if (item == RT_NULL)
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     if (enabled == PIN_IRQ_ENABLE)
     {
diff --git a/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f20x.c b/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f20x.c
index 3d92078129..f5a72b0c65 100644
--- a/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f20x.c
+++ b/bsp/wch/arm/Libraries/ch32_drivers/drv_gpio_ch32f20x.c
@@ -398,12 +398,12 @@ rt_err_t ch32f2_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint8
     find = exti_line_irq_list_find(pin);
 
     if (find == RT_NULL)
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     item = pin_info_list_find(pin);
 
     if (item == RT_NULL)
-        return RT_EINVAL;
+        return -RT_EINVAL;
 
     if (enabled == PIN_IRQ_ENABLE)
     {
diff --git a/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f10x.c b/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f10x.c
index 2a7671c278..ab73bf83a9 100644
--- a/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f10x.c
+++ b/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f10x.c
@@ -210,7 +210,7 @@ static rt_err_t ch32f1_hwtimer_control(struct rt_hwtimer_device *device, rt_uint
         }
         else
         {
-            result = RT_EINVAL;
+            result = -RT_EINVAL;
         }
     }
     break;
diff --git a/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f20x.c b/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f20x.c
index 564180a269..1631ee95d0 100644
--- a/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f20x.c
+++ b/bsp/wch/arm/Libraries/ch32_drivers/drv_hwtimer_ch32f20x.c
@@ -258,7 +258,7 @@ static rt_err_t ch32f2_hwtimer_control(struct rt_hwtimer_device *device, rt_uint
         }
         else
         {
-            result = RT_EINVAL;
+            result = -RT_EINVAL;
         }
     }
     break;
diff --git a/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f10x.c b/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f10x.c
index 646e593f49..dbd5eb21ad 100644
--- a/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f10x.c
+++ b/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f10x.c
@@ -180,13 +180,13 @@ static rt_err_t ch32f1_pwm_device_enable(struct rt_device_pwm *device, struct rt
   if (channel_index <= 4 && channel_index > 0)
   {
     if (pwm_device->channel[channel_index - 1] == 0xFF)
-      return RT_EINVAL;
+      return -RT_EINVAL;
 
     TIM_CCxCmd(pwm_device->periph, pwm_device->channel[channel_index - 1], ccx_state);
   }
   else
   {
-    return RT_EINVAL;
+    return -RT_EINVAL;
   }
 
   TIM_Cmd(pwm_device->periph, ENABLE);
@@ -234,7 +234,7 @@ static rt_err_t ch32f1_pwm_device_get(struct rt_device_pwm *device, struct rt_pw
     configuration->pulse = ((ccr_counter * 100) / arr_counter) * configuration->period / 100;
   }
   else
-    return RT_EINVAL;
+    return -RT_EINVAL;
 
   return RT_EOK;
 }
@@ -330,7 +330,7 @@ static rt_err_t ch32f1_pwm_device_set(struct rt_device_pwm *device, struct rt_pw
   }
   else
   {
-    return RT_EINVAL;
+    return -RT_EINVAL;
   }
 
   TIM_ARRPreloadConfig(pwm_device->periph, ENABLE);
@@ -356,7 +356,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
   case PWM_CMD_GET:
     return ch32f1_pwm_device_get(device, configuration);
   default:
-    return RT_EINVAL;
+    return -RT_EINVAL;
   }
 }
 
diff --git a/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f20x.c b/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f20x.c
index 791d9f148d..6393391138 100644
--- a/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f20x.c
+++ b/bsp/wch/arm/Libraries/ch32_drivers/drv_pwm_ch32f20x.c
@@ -301,13 +301,13 @@ static rt_err_t ch32f2_pwm_device_enable(struct rt_device_pwm *device, struct rt
   if (channel_index <= 4 && channel_index > 0)
   {
     if (pwm_device->channel[channel_index - 1] == 0xFF)
-      return RT_EINVAL;
+      return -RT_EINVAL;
 
     TIM_CCxCmd(pwm_device->periph, pwm_device->channel[channel_index - 1], ccx_state);
   }
   else
   {
-    return RT_EINVAL;
+    return -RT_EINVAL;
   }
 
   TIM_Cmd(pwm_device->periph, ENABLE);
@@ -355,7 +355,7 @@ static rt_err_t ch32f2_pwm_device_get(struct rt_device_pwm *device, struct rt_pw
     configuration->pulse = ((ccr_counter * 100) / arr_counter) * configuration->period / 100;
   }
   else
-    return RT_EINVAL;
+    return -RT_EINVAL;
 
   return RT_EOK;
 }
@@ -451,7 +451,7 @@ static rt_err_t ch32f2_pwm_device_set(struct rt_device_pwm *device, struct rt_pw
   }
   else
   {
-    return RT_EINVAL;
+    return -RT_EINVAL;
   }
 
   TIM_ARRPreloadConfig(pwm_device->periph, ENABLE);
@@ -477,7 +477,7 @@ static rt_err_t drv_pwm_control(struct rt_device_pwm *device, int cmd, void *arg
   case PWM_CMD_GET:
     return ch32f2_pwm_device_get(device, configuration);
   default:
-    return RT_EINVAL;
+    return -RT_EINVAL;
   }
 }
 
diff --git a/bsp/yichip/yc3121-pos/drivers/drv_gpio.c b/bsp/yichip/yc3121-pos/drivers/drv_gpio.c
index fc695a0318..22c3b8fe29 100644
--- a/bsp/yichip/yc3121-pos/drivers/drv_gpio.c
+++ b/bsp/yichip/yc3121-pos/drivers/drv_gpio.c
@@ -209,7 +209,7 @@ static rt_err_t yc_pin_irq_enable(struct rt_device *device,
             break;
         default:
             rt_hw_interrupt_enable(level);
-            return RT_EINVAL;
+            return -RT_EINVAL;
         }
 
         level = rt_hw_interrupt_disable();
diff --git a/components/drivers/wlan/wlan_mgnt.c b/components/drivers/wlan/wlan_mgnt.c
index 768d342069..27bd5623c8 100644
--- a/components/drivers/wlan/wlan_mgnt.c
+++ b/components/drivers/wlan/wlan_mgnt.c
@@ -1670,7 +1670,7 @@ rt_err_t rt_wlan_register_event_handler(rt_wlan_event_t event, rt_wlan_event_han
 
     if (event >= RT_WLAN_EVT_MAX)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     RT_WLAN_LOG_D("%s is run event:%d", __FUNCTION__, event);
 
@@ -1690,7 +1690,7 @@ rt_err_t rt_wlan_unregister_event_handler(rt_wlan_event_t event)
 
     if (event >= RT_WLAN_EVT_MAX)
     {
-        return RT_EINVAL;
+        return -RT_EINVAL;
     }
     RT_WLAN_LOG_D("%s is run event:%d", __FUNCTION__, event);
     MGNT_LOCK();
diff --git a/components/lwp/lwp_signal.c b/components/lwp/lwp_signal.c
index ccebec7d80..44a1083c57 100644
--- a/components/lwp/lwp_signal.c
+++ b/components/lwp/lwp_signal.c
@@ -455,7 +455,7 @@ int lwp_sigprocmask(int how, const lwp_sigset_t *sigset, lwp_sigset_t *oset)
                 newset = *sigset;
                 break;
             default:
-                ret = RT_EINVAL;
+                ret = -RT_EINVAL;
                 goto out;
         }
 
diff --git a/components/utilities/rt-link/src/rtlink_dev.c b/components/utilities/rt-link/src/rtlink_dev.c
index 24c45585ea..85d19abd4c 100644
--- a/components/utilities/rt-link/src/rtlink_dev.c
+++ b/components/utilities/rt-link/src/rtlink_dev.c
@@ -321,7 +321,7 @@ rt_err_t  rt_link_dev_control(rt_device_t dev, int cmd, void *args)
     if (cmd & RT_DEVICE_CTRL_CONFIG)
     {
         if (args == RT_NULL)
-            return RT_EINVAL;
+            return -RT_EINVAL;
         RTLINK_SERV(dev).service = ((struct rt_link_service *)args)->service;
         RTLINK_SERV(dev).timeout_tx = ((struct rt_link_service *)args)->timeout_tx;
         RTLINK_SERV(dev).flag = ((struct rt_link_service *)args)->flag;