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V4L/DVB (6269): V4L: Fix a "scheduling while atomic" bug in saa7134 

set_tvnorm can sleep in saa7134_i2c_xfer
(it will be called through tuner code)
but code calls it under spinlock. Fix that

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Maxim Levitsky 2007-09-27 20:34:15 -03:00 committed by Mauro Carvalho Chehab
parent 9900132f34
commit b4aeb8b823
1 changed files with 4 additions and 0 deletions
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4
drivers/media/video/saa7134/saa7134-video.c
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@ -1834,7 +1834,11 @@ static int video_do_ioctl(struct inode *inode, struct file *file,
if (res_check(fh, RESOURCE_OVERLAY)) {
spin_lock_irqsave(&dev->slock,flags);
stop_preview(dev,fh);
spin_unlock_irqrestore(&dev->slock, flags);
set_tvnorm(dev,&tvnorms[i]);
spin_lock_irqsave(&dev->slock, flags);
start_preview(dev,fh);
spin_unlock_irqrestore(&dev->slock,flags);
} else