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authorErnst Martin Witte <emw-linux-kernel@nocabal.de>2016-01-09 23:18:45 +0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2016-02-01 14:40:18 +0300
commit631c694f7d7e17147bcf6c7c3669c8f4dc84cc09 (patch)
tree28ddcb04999b3464000e847b24759c3a651b158f /drivers/media/dvb-frontends/af9013.c
parent4c7cad4bbf718e73a49e236e2b79489f1ee83810 (diff)
downloadlinux-631c694f7d7e17147bcf6c7c3669c8f4dc84cc09.tar.xz
[media] af9013: cancel_delayed_work_sync before device removal / kfree
af9013_remove was calling kfree(state) with possibly still active schedule_delayed_work(&state->statistics_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>
Diffstat (limited to 'drivers/media/dvb-frontends/af9013.c')
-rw-r--r--drivers/media/dvb-frontends/af9013.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c
index e23197da84af..41ab5defb798 100644
--- a/drivers/media/dvb-frontends/af9013.c
+++ b/drivers/media/dvb-frontends/af9013.c
@@ -1344,6 +1344,10 @@ err:
static void af9013_release(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
+
+ /* stop statistics polling */
+ cancel_delayed_work_sync(&state->statistics_work);
+
kfree(state);
}