From 01d1d714e26624bc50ba95c49cf6e15bb215c150 Mon Sep 17 00:00:00 2001 From: Ernst Martin Witte Date: Sat, 9 Jan 2016 18:18:43 -0200 Subject: [PATCH] [media] si2157: cancel_delayed_work_sync before device removal / kfree si2157_remove was calling kfree(dev) with possibly still active schedule_delayed_work(dev->stat_work). This 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/tuners/si2157.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index 5da5b421d310..3450dfb7c427 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -458,6 +458,9 @@ static int si2157_remove(struct i2c_client *client) dev_dbg(&client->dev, "\n"); + /* stop statistics polling */ + cancel_delayed_work_sync(&dev->stat_work); + memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops)); fe->tuner_priv = NULL; kfree(dev); -- 2.34.1