From 41ff9142df375ac319b1d9fe50d88e4247da6f1a Mon Sep 17 00:00:00 2001 From: Ernst Martin Witte Date: Sat, 9 Jan 2016 18:18:44 -0200 Subject: [PATCH] [media] ts2020: cancel_delayed_work_sync before device removal / kfree ts2020_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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/ts2020.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/dvb-frontends/ts2020.c b/drivers/media/dvb-frontends/ts2020.c index 7979e5d6498b..14b410ffe612 100644 --- a/drivers/media/dvb-frontends/ts2020.c +++ b/drivers/media/dvb-frontends/ts2020.c @@ -712,6 +712,10 @@ static int ts2020_remove(struct i2c_client *client) dev_dbg(&client->dev, "\n"); + /* stop statistics polling */ + if (!dev->dont_poll) + cancel_delayed_work_sync(&dev->stat_work); + regmap_exit(dev->regmap); kfree(dev); return 0; -- 2.34.1