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[media] rtl2830: cancel_delayed_work_sync before device removal / kfree

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rtl2830_remove  was  calling  kfree(dev) with  possibly  still  active
schedule_delayed_work(&dev->stat_work).   A  similar   bug  in  si2157
caused kernel panics in call_timer_fn e.g. after rmmod cx23885.

Signed-off-by: Ernst Martin Witte <emw-linux-kernel@nocabal.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Ernst Martin Witte 2016-01-09 18:18:47 -02:00 committed by Mauro Carvalho Chehab
parent 01d1d714e2
commit 4fd57ed615
1 changed files with 3 additions and 0 deletions
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3
drivers/media/dvb-frontends/rtl2830.c
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@ -900,6 +900,9 @@ static int rtl2830_remove(struct i2c_client *client)
dev_dbg(&client->dev, "\n");
/* stop statistics polling */
cancel_delayed_work_sync(&dev->stat_work);
i2c_del_mux_adapter(dev->adapter);
regmap_exit(dev->regmap);
kfree(dev);