From: Jiri Slaby <jirislaby@gmail.com>
Date: Wed, 10 Oct 2007 01:03:12 +0000 (-0300)
Subject: V4L/DVB (6307): V4L: w9968cf, remove bad usage of ERESTARTSYS
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3abff557d5eed7d6fd03aa11353a1c0f329cac2b;p=linux-beck.git

V4L/DVB (6307): V4L: w9968cf, remove bad usage of ERESTARTSYS

w9968cf, remove bad usage of ERESTARTSYS

down_read_trylock can't be interrupted and so ERESTARTSYS would reach
userspace, which is not permitted. Change it to EAGAIN

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/drivers/media/video/w9968cf.c b/drivers/media/video/w9968cf.c
index 77599f228b61..5a1b5f5a7d46 100644
--- a/drivers/media/video/w9968cf.c
+++ b/drivers/media/video/w9968cf.c
@@ -2679,7 +2679,7 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
 
 	/* This the only safe way to prevent race conditions with disconnect */
 	if (!down_read_trylock(&w9968cf_disconnect))
-		return -ERESTARTSYS;
+		return -EAGAIN;
 
 	cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));