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

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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>
This commit is contained in:
Jiri Slaby 2007-10-09 22:03:12 -03:00 committed by Mauro Carvalho Chehab
parent acd827d63a
commit 3abff557d5
1 changed files with 1 additions and 1 deletions
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2
drivers/media/video/w9968cf.c
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@ -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));