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V4L/DVB (5178): Avoid race when deregistering the IR control for dvb-usb 

The work item function is dvb_usb_read_remote_control():
        INIT_WORK(&d->rc_query_work, dvb_usb_read_remote_control, d);
and the last piece of work it does is:
        schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));
Hence you need to call "cancel_rearming_delayed_work()" and not
"cancel_delayed_work()", correct?  I certainly haven't seen this oops
reoccur since I applied this patch.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Chris Rankin 2007-02-06 20:29:07 -03:00 committed by Mauro Carvalho Chehab
parent 705d41e5da
commit e1af498063
1 changed files with 1 additions and 1 deletions
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2
drivers/media/dvb/dvb-usb/dvb-usb-remote.c
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@ -151,7 +151,7 @@ int dvb_usb_remote_init(struct dvb_usb_device *d)
int dvb_usb_remote_exit(struct dvb_usb_device *d)
{
if (d->state & DVB_USB_STATE_REMOTE) {
cancel_delayed_work(&d->rc_query_work);
cancel_rearming_delayed_work(&d->rc_query_work);
flush_scheduled_work();
input_unregister_device(d->rc_input_dev);
}