Return-path: Received: from eusmtp01.atmel.com ([212.144.249.242]:48858 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932095AbbJ0Iak (ORCPT ); Tue, 27 Oct 2015 04:30:40 -0400 From: Glen Lee To: CC: , , , , , , , , Subject: [PATCH V4] staging: wilc1000: wilc_msgqueue.c : remove goto statement Date: Tue, 27 Oct 2015 17:33:37 +0900 Message-ID: <1445934817-27390-1-git-send-email-glen.lee@atmel.com> (sfid-20151027_093045_838367_3FEAD9A5) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Leo Kim 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 Signed-off-by: Tony Cho Signed-off-by: Glen Lee --- 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