From: Andreas Oberritter <obi@linuxtv.org>
Date: Thu, 4 Aug 2011 15:33:13 +0000 (-0300)
Subject: [media] DVB: dvb_frontend: avoid possible race condition on first event
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=5c9f480bdb584944b5af390ccdd8c3e586bdafdb;p=deliverable%2Flinux.git

[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 23d79d0f25ee..45ea843d93de 100644
--- 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;