[PATCH 2/2] drivers: staging: wilc1000: Call kfree only for error cases

From: Chandra S Gorentla
Date: Sat Oct 03 2015 - 05:28:45 EST


- kfree is being called for the members of the queue without
de-queuing them; they are just inserted within this function;
they are supposed to be de-queued and freed in a function
for receiving the queue items
- goto statements are removed
- After kfree correction, there is no need for target block
of goto statement; hence it is removed

Signed-off-by: Chandra S Gorentla <csgorentla@xxxxxxxxx>
---
drivers/staging/wilc1000/wilc_msgqueue.c | 22 ++++++----------------
1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/drivers/staging/wilc1000/wilc_msgqueue.c b/drivers/staging/wilc1000/wilc_msgqueue.c
index 284a3f5..eae90be 100644
--- a/drivers/staging/wilc1000/wilc_msgqueue.c
+++ b/drivers/staging/wilc1000/wilc_msgqueue.c
@@ -56,32 +56,30 @@ 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;
}

/* construct a new message */
pstrMessage = kmalloc(sizeof(Message), GFP_ATOMIC);
if (!pstrMessage)
return -ENOMEM;
+
pstrMessage->u32Length = u32SendBufferSize;
pstrMessage->pstrNext = NULL;
pstrMessage->pvBuffer = kmalloc(u32SendBufferSize, GFP_ATOMIC);
if (!pstrMessage->pvBuffer) {
- result = -ENOMEM;
- goto ERRORHANDLER;
+ kfree(pstrMessage);
+ return -ENOMEM;
}
memcpy(pstrMessage->pvBuffer, pvSendBuffer, u32SendBufferSize);

@@ -102,15 +100,7 @@ int wilc_mq_send(WILC_MsgQueueHandle *pHandle,
spin_unlock_irqrestore(&pHandle->strCriticalSection, flags);

up(&pHandle->hSem);
-
-ERRORHANDLER:
- /* error occured, free any allocations */
- if (pstrMessage) {
- kfree(pstrMessage->pvBuffer);
- kfree(pstrMessage);
- }
-
- return result;
+ return 0;
}

/*!
--
2.1.4

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