From 4bdcaa054e1c73697b390c32c434d96836121306 Mon Sep 17 00:00:00 2001 From: Ernst Martin Witte Date: Sat, 9 Jan 2016 18:18:46 -0200 Subject: [PATCH] [media] af9033: cancel_delayed_work_sync before device removal / kfree af9033_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/af9033.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c index bc35206a0821..8b328d1ca8d3 100644 --- a/drivers/media/dvb-frontends/af9033.c +++ b/drivers/media/dvb-frontends/af9033.c @@ -1372,6 +1372,9 @@ static int af9033_remove(struct i2c_client *client) dev_dbg(&dev->client->dev, "\n"); + /* stop statistics polling */ + cancel_delayed_work_sync(&dev->stat_work); + dev->fe.ops.release = NULL; dev->fe.demodulator_priv = NULL; kfree(dev); -- 2.39.5