[media] DVB: dvb_frontend: avoid possible race condition on first event

  enqueued before the frontend thread wakes up.

Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 23d79d0f25eef275ee396691b3bed76be10dcde2..45ea843d93de0b8159a1dad7d6672d0d5f6aea33 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -1891,8 +1891,8 @@ static int dvb_frontend_ioctl_legacy(struct file *file,
                /* Request the search algorithm to search */
                fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
 
-               dvb_frontend_wakeup(fe);
                dvb_frontend_add_event(fe, 0);
+               dvb_frontend_wakeup(fe);
                fepriv->status = 0;
                err = 0;
                break;