From: Leo Kim <leo....@atmel.com>
This patch removes goto statement and moves the spin lock position.
If a memory allocation fails, directly returns an error.
The spin lock actually protects the pHandle. Therefore, call spin lock just
before pHandle is used.
Signee-eff-by: Lee Kim <leo....@atmel.com>
Signed-off-by: Tony Cho <tony....@atmel.com>
Signed-off-by: Glen Lee <glen....@atmel.com>
---
drivers/staging/wilc1000/wilc_msgqueue.c | 25 ++++++++-----------------
1 file changed, 8 insertions(+), 17 deletions(-)
diff --git a/drivers/staging/wilc1000/wilc_msgqueue.c
b/drivers/staging/wilc1000/wilc_msgqueue.c
index b13809a..0eff121 100644
--- a/drivers/staging/wilc1000/wilc_msgqueue.c
+++ b/drivers/staging/wilc1000/wilc_msgqueue.c
@@ -56,37 +56,35 @@ int wilc_mq_destroy(WILC_MsgQueueHandle *pHandle)
int wilc_mq_send(WILC_MsgQueueHandle *pHandle,
const void *pvSendBuffer, u32 u32SendBufferSize)
{
- int result = 0;
unsigned long flags;
Message *pstrMessage = NULL;
if ((!pHandle) || (u32SendBufferSize == 0) || (!pvSendBuffer)) {
PRINT_ER("pHandle or pvSendBuffer is null\n");
- result = -EFAULT;
- goto ERRORHANDLER;
+ return -EFAULT;
}
if (pHandle->bExiting) {
PRINT_ER("pHandle fail\n");
- result = -EFAULT;
- goto ERRORHANDLER;
+ return -EFAULT;
}
- spin_lock_irqsave(&pHandle->strCriticalSection, flags);
-
/* construct a new message */
pstrMessage = kmalloc(sizeof(Message), GFP_ATOMIC);
if (!pstrMessage)
return -ENOMEM;
+
pstrMessage->u32Length = u32SendBufferSize;
pstrMessage->pstrNext = NULL;
pstrMessage->pvBuffer = kmemdup(pvSendBuffer, u32SendBufferSize,
GFP_ATOMIC);
if (!pstrMessage->pvBuffer) {
- result = -ENOMEM;
- goto ERRORHANDLER;
+ kfree(pstrMessage);
+ return -ENOMEM;
}
+ spin_lock_irqsave(&pHandle->strCriticalSection, flags);
+
/* add it to the message queue */
if (!pHandle->pstrMessageList) {
pHandle->pstrMessageList = pstrMessage;
@@ -103,14 +101,7 @@ int wilc_mq_send(WILC_MsgQueueHandle *pHandle,
up(&pHandle->hSem);
-ERRORHANDLER:
- /* error occured, free any allocations */
- if (pstrMessage) {
- kfree(pstrMessage->pvBuffer);
- kfree(pstrMessage);
- }
-
- return result;
+ return 0;
}
/*!
--
1.9.1
--
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