[PATCH 1/2] drivers: staging: wilc1000: Move spin lock to the start of critical section

From: Chandra S Gorentla
Date: Sat Oct 03 2015 - 05:28:39 EST


The spin_lock_irqsave is moved to just beginning of critical section.
This change moves a couple of return statements out of the lock.

Signed-off-by: Chandra S Gorentla <csgorentla@xxxxxxxxx>
---
drivers/staging/wilc1000/wilc_msgqueue.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/wilc1000/wilc_msgqueue.c b/drivers/staging/wilc1000/wilc_msgqueue.c
index d5ebd6d..284a3f5 100644
--- a/drivers/staging/wilc1000/wilc_msgqueue.c
+++ b/drivers/staging/wilc1000/wilc_msgqueue.c
@@ -72,8 +72,6 @@ int wilc_mq_send(WILC_MsgQueueHandle *pHandle,
goto ERRORHANDLER;
}

- spin_lock_irqsave(&pHandle->strCriticalSection, flags);
-
/* construct a new message */
pstrMessage = kmalloc(sizeof(Message), GFP_ATOMIC);
if (!pstrMessage)
@@ -87,6 +85,8 @@ int wilc_mq_send(WILC_MsgQueueHandle *pHandle,
}
memcpy(pstrMessage->pvBuffer, pvSendBuffer, u32SendBufferSize);

+ spin_lock_irqsave(&pHandle->strCriticalSection, flags);
+
/* add it to the message queue */
if (!pHandle->pstrMessageList) {
pHandle->pstrMessageList = pstrMessage;
--
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/