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V4L/DVB (5699): Cinergyt2: fix file release handler 

If this mutex_lock_interruptible() does fail due to signal_pending() then the
state of the driver will get trashed in interesting ways, because userspace
cannot and will not retry the close().

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Andrew Morton 2007-05-26 07:54:21 -03:00 committed by Mauro Carvalho Chehab
parent 624fc7f52b
commit ffeb9ec72e
1 changed files with 1 additions and 2 deletions
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3
drivers/media/dvb/cinergyT2/cinergyT2.c
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@ -519,8 +519,7 @@ static int cinergyt2_release (struct inode *inode, struct file *file)
struct dvb_device *dvbdev = file->private_data;
struct cinergyt2 *cinergyt2 = dvbdev->priv;
if (mutex_lock_interruptible(&cinergyt2->sem))
return -ERESTARTSYS;
mutex_lock(&cinergyt2->sem);
if (!cinergyt2->disconnect_pending && (file->f_flags & O_ACCMODE) != O_RDONLY) {
cancel_delayed_work(&cinergyt2->query_work);