diff --git a/components/drivers/include/drivers/mtd_nand.h b/components/drivers/include/drivers/mtd_nand.h
index 8afed000dd..db5e61043a 100644
--- a/components/drivers/include/drivers/mtd_nand.h
+++ b/components/drivers/include/drivers/mtd_nand.h
@@ -45,71 +45,71 @@ struct rt_mtd_nand_device
     rt_uint32_t block_end;          /* The end of available block */
 
     /* operations interface */
-    const struct rt_mtd_nand_driver_ops* ops;
+    const struct rt_mtd_nand_driver_ops *ops;
 };
 
 struct rt_mtd_nand_driver_ops
 {
-    rt_err_t (*read_id) (struct rt_mtd_nand_device* device);
+    rt_err_t (*read_id)(struct rt_mtd_nand_device *device);
 
-    rt_err_t (*read_page)(struct rt_mtd_nand_device* device,
+    rt_err_t (*read_page)(struct rt_mtd_nand_device *device,
                           rt_off_t page,
-                          rt_uint8_t* data, rt_uint32_t data_len,
-                          rt_uint8_t * spare, rt_uint32_t spare_len);
+                          rt_uint8_t *data, rt_uint32_t data_len,
+                          rt_uint8_t *spare, rt_uint32_t spare_len);
 
-    rt_err_t (*write_page)(struct rt_mtd_nand_device * device,
+    rt_err_t (*write_page)(struct rt_mtd_nand_device *device,
                            rt_off_t page,
-                           const rt_uint8_t * data, rt_uint32_t data_len,
-                           const rt_uint8_t * spare, rt_uint32_t spare_len);
-    rt_err_t (*move_page) (struct rt_mtd_nand_device *device, rt_off_t src_page, rt_off_t dst_page);
+                           const rt_uint8_t *data, rt_uint32_t data_len,
+                           const rt_uint8_t *spare, rt_uint32_t spare_len);
+    rt_err_t (*move_page)(struct rt_mtd_nand_device *device, rt_off_t src_page, rt_off_t dst_page);
 
-    rt_err_t (*erase_block)(struct rt_mtd_nand_device* device, rt_uint32_t block);
-    rt_err_t (*check_block)(struct rt_mtd_nand_device* device, rt_uint32_t block);
-    rt_err_t (*mark_badblock)(struct rt_mtd_nand_device* device, rt_uint32_t block);
+    rt_err_t (*erase_block)(struct rt_mtd_nand_device *device, rt_uint32_t block);
+    rt_err_t (*check_block)(struct rt_mtd_nand_device *device, rt_uint32_t block);
+    rt_err_t (*mark_badblock)(struct rt_mtd_nand_device *device, rt_uint32_t block);
 };
 
-rt_err_t rt_mtd_nand_register_device(const char* name, struct rt_mtd_nand_device* device);
+rt_err_t rt_mtd_nand_register_device(const char *name, struct rt_mtd_nand_device *device);
 
-rt_inline rt_uint32_t rt_mtd_nand_read_id(struct rt_mtd_nand_device* device)
+rt_inline rt_uint32_t rt_mtd_nand_read_id(struct rt_mtd_nand_device *device)
 {
     return device->ops->read_id(device);
 }
 
 rt_inline rt_err_t rt_mtd_nand_read(
-    struct rt_mtd_nand_device* device,
+    struct rt_mtd_nand_device *device,
     rt_off_t page,
-    rt_uint8_t* data, rt_uint32_t data_len,
-    rt_uint8_t * spare, rt_uint32_t spare_len)
+    rt_uint8_t *data, rt_uint32_t data_len,
+    rt_uint8_t *spare, rt_uint32_t spare_len)
 {
     return device->ops->read_page(device, page, data, data_len, spare, spare_len);
 }
 
 rt_inline rt_err_t rt_mtd_nand_write(
-    struct rt_mtd_nand_device* device,
+    struct rt_mtd_nand_device *device,
     rt_off_t page,
-    const rt_uint8_t* data, rt_uint32_t data_len,
-    const rt_uint8_t * spare, rt_uint32_t spare_len)
+    const rt_uint8_t *data, rt_uint32_t data_len,
+    const rt_uint8_t *spare, rt_uint32_t spare_len)
 {
     return device->ops->write_page(device, page, data, data_len, spare, spare_len);
 }
 
-rt_inline rt_err_t rt_mtd_nand_move_page(struct rt_mtd_nand_device* device,
-                                         rt_off_t src_page, rt_off_t dst_page)
+rt_inline rt_err_t rt_mtd_nand_move_page(struct rt_mtd_nand_device *device,
+        rt_off_t src_page, rt_off_t dst_page)
 {
     return device->ops->move_page(device, src_page, dst_page);
 }
 
-rt_inline rt_err_t rt_mtd_nand_erase_block(struct rt_mtd_nand_device* device, rt_uint32_t block)
+rt_inline rt_err_t rt_mtd_nand_erase_block(struct rt_mtd_nand_device *device, rt_uint32_t block)
 {
     return device->ops->erase_block(device, block);
 }
 
-rt_inline rt_err_t rt_mtd_nand_check_block(struct rt_mtd_nand_device* device, rt_uint32_t block)
+rt_inline rt_err_t rt_mtd_nand_check_block(struct rt_mtd_nand_device *device, rt_uint32_t block)
 {
     return device->ops->check_block(device, block);
 }
 
-rt_inline rt_err_t rt_mtd_nand_mark_badblock(struct rt_mtd_nand_device* device, rt_uint32_t block)
+rt_inline rt_err_t rt_mtd_nand_mark_badblock(struct rt_mtd_nand_device *device, rt_uint32_t block)
 {
     return device->ops->mark_badblock(device, block);
 }
diff --git a/components/drivers/mtd/mtd_nand.c b/components/drivers/mtd/mtd_nand.c
index 3e4582ceaf..ffcb398aa9 100644
--- a/components/drivers/mtd/mtd_nand.c
+++ b/components/drivers/mtd/mtd_nand.c
@@ -56,7 +56,7 @@ static rt_err_t _mtd_control(rt_device_t dev, int cmd, void *args)
 }
 
 #ifdef RT_USING_DEVICE_OPS
-const static struct rt_device_ops mtd_nand_ops = 
+const static struct rt_device_ops mtd_nand_ops =
 {
     _mtd_init,
     _mtd_open,
@@ -78,7 +78,7 @@ rt_err_t rt_mtd_nand_register_device(const char                *name,
     /* set device class and generic device interface */
     dev->type        = RT_Device_Class_MTD;
 #ifdef RT_USING_DEVICE_OPS
-	dev->ops         = &mtd_nand_ops;
+    dev->ops         = &mtd_nand_ops;
 #else
     dev->init        = _mtd_init;
     dev->open        = _mtd_open;
@@ -101,186 +101,186 @@ rt_err_t rt_mtd_nand_register_device(const char                *name,
 
 static void mtd_dump_hex(const rt_uint8_t *ptr, rt_size_t buflen)
 {
-	unsigned char *buf = (unsigned char*)ptr;
-	int i, j;
-	for (i=0; i<buflen; i+=16) 
-	{
-		rt_kprintf("%06x: ", i);
-		for (j=0; j<16; j++)
-			if (i+j < buflen)
-				rt_kprintf("%02x ", buf[i+j]);
-			else
-				rt_kprintf("   ");
-		rt_kprintf(" ");
-		for (j=0; j<16; j++)
-			if (i+j < buflen)
-				rt_kprintf("%c", __is_print(buf[i+j]) ? buf[i+j] : '.');
-		rt_kprintf("\n");
-	}
+    unsigned char *buf = (unsigned char *)ptr;
+    int i, j;
+    for (i = 0; i < buflen; i += 16)
+    {
+        rt_kprintf("%06x: ", i);
+        for (j = 0; j < 16; j++)
+            if (i + j < buflen)
+                rt_kprintf("%02x ", buf[i + j]);
+            else
+                rt_kprintf("   ");
+        rt_kprintf(" ");
+        for (j = 0; j < 16; j++)
+            if (i + j < buflen)
+                rt_kprintf("%c", __is_print(buf[i + j]) ? buf[i + j] : '.');
+        rt_kprintf("\n");
+    }
 }
 
-int mtd_nandid(const char* name)
+int mtd_nandid(const char *name)
 {
-	struct rt_mtd_nand_device *nand;
-	nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
-	if (nand == RT_NULL)
-	{
-		rt_kprintf("no nand device found!\n");
-		return -RT_ERROR;
-	}
+    struct rt_mtd_nand_device *nand;
+    nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
+    if (nand == RT_NULL)
+    {
+        rt_kprintf("no nand device found!\n");
+        return -RT_ERROR;
+    }
 
-	return rt_mtd_nand_read_id(nand);
+    return rt_mtd_nand_read_id(nand);
 }
 FINSH_FUNCTION_EXPORT_ALIAS(mtd_nandid, nand_id, read ID - nandid(name));
 
-int mtd_nand_read(const char* name, int block, int page)
+int mtd_nand_read(const char *name, int block, int page)
 {
-	rt_err_t result;
-	rt_uint8_t *page_ptr;
-	rt_uint8_t *oob_ptr;
-	struct rt_mtd_nand_device *nand;
+    rt_err_t result;
+    rt_uint8_t *page_ptr;
+    rt_uint8_t *oob_ptr;
+    struct rt_mtd_nand_device *nand;
 
-	nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
-	if (nand == RT_NULL)
-	{
-		rt_kprintf("no nand device found!\n");
-		return -RT_ERROR;
-	}
+    nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
+    if (nand == RT_NULL)
+    {
+        rt_kprintf("no nand device found!\n");
+        return -RT_ERROR;
+    }
 
-	page_ptr = rt_malloc(nand->page_size + nand->oob_size);
-	if (page_ptr == RT_NULL)
-	{
-		rt_kprintf("out of memory!\n");
-		return -RT_ENOMEM;
-	}
+    page_ptr = rt_malloc(nand->page_size + nand->oob_size);
+    if (page_ptr == RT_NULL)
+    {
+        rt_kprintf("out of memory!\n");
+        return -RT_ENOMEM;
+    }
 
-	oob_ptr = page_ptr + nand->page_size;
-	rt_memset(page_ptr, 0xff, nand->page_size + nand->oob_size);
+    oob_ptr = page_ptr + nand->page_size;
+    rt_memset(page_ptr, 0xff, nand->page_size + nand->oob_size);
 
-	/* calculate the page number */
-	page = block * nand->pages_per_block + page;
-	result = rt_mtd_nand_read(nand, page, page_ptr, nand->page_size,
-		oob_ptr, nand->oob_size);
+    /* calculate the page number */
+    page = block * nand->pages_per_block + page;
+    result = rt_mtd_nand_read(nand, page, page_ptr, nand->page_size,
+                              oob_ptr, nand->oob_size);
 
-	rt_kprintf("read page, rc=%d\n", result);
-	mtd_dump_hex(page_ptr, nand->page_size);
-	mtd_dump_hex(oob_ptr, nand->oob_size);
+    rt_kprintf("read page, rc=%d\n", result);
+    mtd_dump_hex(page_ptr, nand->page_size);
+    mtd_dump_hex(oob_ptr, nand->oob_size);
 
-	rt_free(page_ptr);
-	return 0;
+    rt_free(page_ptr);
+    return 0;
 }
 FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_read, nand_read, read page in nand - nand_read(name, block, page));
 
-int mtd_nand_readoob(const char* name, int block, int page)
+int mtd_nand_readoob(const char *name, int block, int page)
 {
-	struct rt_mtd_nand_device *nand;
-	rt_uint8_t *oob_ptr;
+    struct rt_mtd_nand_device *nand;
+    rt_uint8_t *oob_ptr;
 
-	nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
-	if (nand == RT_NULL)
-	{
-		rt_kprintf("no nand device found!\n");
-		return -RT_ERROR;
-	}
+    nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
+    if (nand == RT_NULL)
+    {
+        rt_kprintf("no nand device found!\n");
+        return -RT_ERROR;
+    }
 
-	oob_ptr = rt_malloc(nand->oob_size);
-	if (oob_ptr == RT_NULL)
-	{
-		rt_kprintf("out of memory!\n");
-		return -RT_ENOMEM;
-	}
+    oob_ptr = rt_malloc(nand->oob_size);
+    if (oob_ptr == RT_NULL)
+    {
+        rt_kprintf("out of memory!\n");
+        return -RT_ENOMEM;
+    }
 
-	/* calculate the page number */
-	page = block * nand->pages_per_block + page;
-	rt_mtd_nand_read(nand, page, RT_NULL, nand->page_size,
-		oob_ptr, nand->oob_size);
-	mtd_dump_hex(oob_ptr, nand->oob_size);
+    /* calculate the page number */
+    page = block * nand->pages_per_block + page;
+    rt_mtd_nand_read(nand, page, RT_NULL, nand->page_size,
+                     oob_ptr, nand->oob_size);
+    mtd_dump_hex(oob_ptr, nand->oob_size);
 
-	rt_free(oob_ptr);
-	return 0;
+    rt_free(oob_ptr);
+    return 0;
 }
 FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_readoob, nand_readoob, read spare data in nand - nand_readoob(name, block, page));
 
-int mtd_nand_write(const char* name, int block, int page)
+int mtd_nand_write(const char *name, int block, int page)
 {
-	rt_err_t result;
-	rt_uint8_t *page_ptr;
-	rt_uint8_t *oob_ptr;
-	rt_uint32_t index;
-	struct rt_mtd_nand_device *nand;
+    rt_err_t result;
+    rt_uint8_t *page_ptr;
+    rt_uint8_t *oob_ptr;
+    rt_uint32_t index;
+    struct rt_mtd_nand_device *nand;
 
-	nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
-	if (nand == RT_NULL)
-	{
-		rt_kprintf("no nand device found!\n");
-		return -RT_ERROR;
-	}
+    nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
+    if (nand == RT_NULL)
+    {
+        rt_kprintf("no nand device found!\n");
+        return -RT_ERROR;
+    }
 
-	page_ptr = rt_malloc(nand->page_size + nand->oob_size);
-	if (page_ptr == RT_NULL)
-	{
-		rt_kprintf("out of memory!\n");
-		return -RT_ENOMEM;
-	}
+    page_ptr = rt_malloc(nand->page_size + nand->oob_size);
+    if (page_ptr == RT_NULL)
+    {
+        rt_kprintf("out of memory!\n");
+        return -RT_ENOMEM;
+    }
 
-	oob_ptr = page_ptr + nand->page_size;
-	/* prepare page data */
-	for (index = 0; index < nand->page_size; index ++)
-	{
-		page_ptr[index] = index & 0xff;
-	}
-	/* prepare oob data */
-	for (index = 0; index < nand->oob_size; index ++)
-	{
-		oob_ptr[index] = index & 0xff;
-	}
+    oob_ptr = page_ptr + nand->page_size;
+    /* prepare page data */
+    for (index = 0; index < nand->page_size; index ++)
+    {
+        page_ptr[index] = index & 0xff;
+    }
+    /* prepare oob data */
+    for (index = 0; index < nand->oob_size; index ++)
+    {
+        oob_ptr[index] = index & 0xff;
+    }
 
-	/* calculate the page number */
-	page = block * nand->pages_per_block + page;
-	result = rt_mtd_nand_write(nand, page, page_ptr, nand->page_size,
-		oob_ptr, nand->oob_size);
-	if (result != RT_MTD_EOK)
-	{
-		rt_kprintf("write page failed!, rc=%d\n", result);
-	}
+    /* calculate the page number */
+    page = block * nand->pages_per_block + page;
+    result = rt_mtd_nand_write(nand, page, page_ptr, nand->page_size,
+                               oob_ptr, nand->oob_size);
+    if (result != RT_MTD_EOK)
+    {
+        rt_kprintf("write page failed!, rc=%d\n", result);
+    }
 
-	rt_free(page_ptr);
-	return 0;
+    rt_free(page_ptr);
+    return 0;
 }
 FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_write, nand_write, write dump data to nand - nand_write(name, block, page));
 
-int mtd_nand_erase(const char* name, int block)
+int mtd_nand_erase(const char *name, int block)
 {
-	struct rt_mtd_nand_device *nand;
-	nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
-	if (nand == RT_NULL)
-	{
-		rt_kprintf("no nand device found!\n");
-		return -RT_ERROR;
-	}
+    struct rt_mtd_nand_device *nand;
+    nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
+    if (nand == RT_NULL)
+    {
+        rt_kprintf("no nand device found!\n");
+        return -RT_ERROR;
+    }
 
-	return rt_mtd_nand_erase_block(nand, block);
+    return rt_mtd_nand_erase_block(nand, block);
 }
 FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_erase, nand_erase, nand_erase(name, block));
 
-int mtd_nand_erase_all(const char* name)
+int mtd_nand_erase_all(const char *name)
 {
-	rt_uint32_t index = 0;
-	struct rt_mtd_nand_device *nand;
-	
-	nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
-	if (nand == RT_NULL)
-	{
-		rt_kprintf("no nand device found!\n");
-		return -RT_ERROR;
-	}
+    rt_uint32_t index = 0;
+    struct rt_mtd_nand_device *nand;
 
-	for (index = 0; index < (nand->block_end - nand->block_start); index ++)
-	{
-		rt_mtd_nand_erase_block(nand, index);
-	}
-	
-	return 0;
+    nand = RT_MTD_NAND_DEVICE(rt_device_find(name));
+    if (nand == RT_NULL)
+    {
+        rt_kprintf("no nand device found!\n");
+        return -RT_ERROR;
+    }
+
+    for (index = 0; index < (nand->block_end - nand->block_start); index ++)
+    {
+        rt_mtd_nand_erase_block(nand, index);
+    }
+
+    return 0;
 }
 FINSH_FUNCTION_EXPORT_ALIAS(mtd_nand_erase_all, nand_erase_all, erase all of nand device - nand_erase_all(name, block));
 #endif