[PATCH V5] staging: wilc1000: wilc_msgqueue.c : remove goto statement
From: Glen Lee <hidden>
Date: 2015-10-28 06:24:24
Subsystem:
staging subsystem, the rest · Maintainers:
Greg Kroah-Hartman, Linus Torvalds
From: Leo Kim <redacted> 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. Signed-off-by: Leo Kim <redacted> Signed-off-by: Tony Cho <redacted> Signed-off-by: Glen Lee <redacted> --- Changes in v5: - fix typo 'Signee-eff-by: Lee Kim [off-list ref]' 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; } /*!
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1.9.1