From: Jiri Slaby <jirislaby@gmail.com>
Date: Wed, 10 Oct 2007 01:15:27 +0000 (-0300)
Subject: V4L/DVB (6308): V4L: zc0301, remove bad usage of ERESTARTSYS
X-Git-Tag: v2.6.24-rc1~1463^2~6
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=c3e2a8e64cb2282a406ff6e63f7bd09eb6f61a1d;p=linux-2.6-omap-h63xx.git

V4L/DVB (6308): V4L: zc0301, remove bad usage of ERESTARTSYS

zc0301, 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/zc0301/zc0301_core.c b/drivers/media/video/zc0301/zc0301_core.c
index 35138c594be..08a93c31c0a 100644
--- a/drivers/media/video/zc0301/zc0301_core.c
+++ b/drivers/media/video/zc0301/zc0301_core.c
@@ -655,7 +655,7 @@ static int zc0301_open(struct inode* inode, struct file* filp)
 	int err = 0;
 
 	if (!down_read_trylock(&zc0301_dev_lock))
-		return -ERESTARTSYS;
+		return -EAGAIN;
 
 	cam = video_get_drvdata(video_devdata(filp));