From: Chandra S Gorentla <csgorentla@gmail.com>
To: gregkh@linuxfoundation.org
Cc: dan.carpenter@oracle.com, johnny.kim@atmel.com,
rachel.kim@atmel.com, chris.park@atmel.com,
linux-wireless@vger.kernel.org, devel@driverdev.osuosl.org,
linux-kernel@vger.kernel.org,
Chandra S Gorentla <csgorentla@gmail.com>
Subject: [PATCH 2/2] drivers: staging: wilc1000: Call kfree only for error cases
Date: Sat, 3 Oct 2015 14:57:30 +0530 [thread overview]
Message-ID: <1443864450-18167-2-git-send-email-csgorentla@gmail.com> (raw)
In-Reply-To: <1443864450-18167-1-git-send-email-csgorentla@gmail.com>
- 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@gmail.com>
---
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
next prev parent reply other threads:[~2015-10-03 9:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-03 9:27 [PATCH 1/2] drivers: staging: wilc1000: Move spin lock to the start of critical section Chandra S Gorentla
2015-10-03 9:27 ` Chandra S Gorentla [this message]
2015-10-04 8:44 ` [PATCH 2/2] drivers: staging: wilc1000: Call kfree only for error cases Greg KH
2015-10-04 9:16 ` Dan Carpenter
2015-10-04 10:10 ` Greg KH
2015-10-04 10:28 ` Chandra Gorentla
2015-10-05 3:23 ` Tony Cho
2015-10-04 8:43 ` [PATCH 1/2] drivers: staging: wilc1000: Move spin lock to the start of critical section Greg KH
2015-10-04 10:07 ` Chandra Gorentla
2015-10-04 10:19 ` Greg KH
2015-10-05 3:23 ` Tony Cho
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