From 8231dfc0879f8f0caecfcdc4b1ebae67cad6878d Mon Sep 17 00:00:00 2001
From: Chaehyun Lim <chaehyun.lim@gmail.com>
Date: Fri, 29 Jan 2016 23:51:33 +0900
Subject: [PATCH] staging: wilc1000: wilc_msgqueue: release semaphore in error
 path

It should be called up(&mq->sem) to release semaphore before returning
error codes as -EFAULT when list is empty.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/wilc1000/wilc_msgqueue.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/wilc1000/wilc_msgqueue.c b/drivers/staging/wilc1000/wilc_msgqueue.c
index f57e4ec3c742..5fe85eb40146 100644
--- a/drivers/staging/wilc1000/wilc_msgqueue.c
+++ b/drivers/staging/wilc1000/wilc_msgqueue.c
@@ -126,6 +126,7 @@ int wilc_mq_recv(struct message_queue *mq,
 
 	if (list_empty(&mq->msg_list)) {
 		spin_unlock_irqrestore(&mq->lock, flags);
+		up(&mq->sem);
 		PRINT_ER("msg is null\n");
 		return -EFAULT;
 	}
-- 
2.20.1