From 4fd57ed61564bd4706e71cfd8c5a259079ddabf3 Mon Sep 17 00:00:00 2001 From: Ernst Martin Witte Date: Sat, 9 Jan 2016 18:18:47 -0200 Subject: [PATCH] [media] rtl2830: cancel_delayed_work_sync before device removal / kfree 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/rtl2830.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/dvb-frontends/rtl2830.c b/drivers/media/dvb-frontends/rtl2830.c index b792f30..74b7712 100644 --- a/drivers/media/dvb-frontends/rtl2830.c +++ b/drivers/media/dvb-frontends/rtl2830.c @@ -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); -- 2.7.4