diff --git a/components/drivers/sdio/SConscript b/components/drivers/sdio/SConscript
index 55aac473e..dfe7075a5 100644
--- a/components/drivers/sdio/SConscript
+++ b/components/drivers/sdio/SConscript
@@ -12,6 +12,6 @@ sd.c
 # The set of source files associated with this SConscript file.
 path = [cwd]
 
-group = DefineGroup('Drivers', src, depend = ['RT_USING_MMCSD'], CPPPATH = path)
+group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_MMCSD'], CPPPATH = path)
 
 Return('group')
diff --git a/components/drivers/sdio/mmcsd_core.c b/components/drivers/sdio/mmcsd_core.c
index b30123331..620a26fd3 100644
--- a/components/drivers/sdio/mmcsd_core.c
+++ b/components/drivers/sdio/mmcsd_core.c
@@ -48,7 +48,20 @@ void mmcsd_req_complete(struct rt_mmcsd_host *host)
 
 void mmcsd_send_request(struct rt_mmcsd_host *host, struct rt_mmcsd_req *req)
 {
-	req->cmd->data = req->data;
+    req->cmd->err = 0;
+	req->cmd->mrq = req;
+	if (req->data)
+    {   
+        req->cmd->data = req->data;
+        req->data->err = 0;
+    	req->data->mrq = req;
+		if (req->stop)
+		{
+			req->data->stop = req->stop;
+			req->stop->err = 0;
+			req->stop->mrq = req;
+		}    	
+   }
 	host->ops->request(host, req);
 	rt_sem_take(&host->sem_ack, RT_WAITING_FOREVER);
 }
diff --git a/components/drivers/sdio/mmcsd_core.h b/components/drivers/sdio/mmcsd_core.h
index 078a0edf9..1e2c9f08b 100644
--- a/components/drivers/sdio/mmcsd_core.h
+++ b/components/drivers/sdio/mmcsd_core.h
@@ -39,6 +39,12 @@ struct rt_mmcsd_data {
 #define DATA_DIR_WRITE	(1 << 0)
 #define DATA_DIR_READ	(1 << 1)
 #define DATA_STREAM	(1 << 2)
+
+	unsigned int		bytes_xfered;
+
+	struct rt_mmcsd_cmd	*stop;		/* stop command */
+	struct rt_mmcsd_req	*mrq;		/* associated request */
+
 	rt_uint32_t  timeout_ns;
 	rt_uint32_t  timeout_clks;
 };
@@ -89,9 +95,11 @@ struct rt_mmcsd_cmd {
  */
 #define cmd_type(cmd)	((cmd)->flags & CMD_MASK)
 	
+	rt_int32_t  retries;	/* max number of retries */
 	rt_int32_t  err;
 
 	struct rt_mmcsd_data *data;
+	struct rt_mmcsd_req	*mrq;		/* associated request */
 };
 
 struct rt_mmcsd_req {
@@ -190,7 +198,7 @@ rt_inline rt_uint32_t fls(rt_uint32_t val)
 	return bit;
 }
 
-#if !defined(__GNUC__)
+#if !defined(__GNUC__) || defined(__CC_ARM)
 rt_inline rt_uint32_t ffs(rt_uint32_t x)
 {
         int r = 1;
diff --git a/components/drivers/sdio/sd.c b/components/drivers/sdio/sd.c
index 67fd39287..f454b8108 100644
--- a/components/drivers/sdio/sd.c
+++ b/components/drivers/sdio/sd.c
@@ -281,7 +281,7 @@ err1:
 static rt_err_t mmcsd_app_cmd(struct rt_mmcsd_host *host, struct rt_mmcsd_card *card)
 {
 	rt_err_t err;
-	struct rt_mmcsd_cmd cmd;
+	struct rt_mmcsd_cmd cmd = {0};
 
 	cmd.cmd_code = APP_CMD;
 
diff --git a/components/drivers/spi/SConscript b/components/drivers/spi/SConscript
index 930ebbee8..666545250 100644
--- a/components/drivers/spi/SConscript
+++ b/components/drivers/spi/SConscript
@@ -3,6 +3,6 @@ from building import *
 cwd     = GetCurrentDir()
 src	= Glob('*.c')
 CPPPATH = [cwd + '/../include']
-group = DefineGroup('Drivers', src, depend = ['RT_USING_SPI'], CPPPATH = CPPPATH)
+group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_SPI'], CPPPATH = CPPPATH)
 
 Return('group')