From e7e5de8bd62c8bcff20570f1ee8b28fde02f8b88 Mon Sep 17 00:00:00 2001
From: Manu Abraham <manu@linuxtv.org>
Date: Thu, 4 Sep 2008 12:34:05 +0200
Subject: [PATCH] DVB: Fix a possible lockup situation

* If algorithm is not defined, we should not simply exit but
the semaphore should be down and then only exit the frontend thread.

From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu2linuxtv.org>

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index c830997..ac224db 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -1230,6 +1230,7 @@ restart:
 				}
 				break;
 			default:
+				down(&fepriv->sem);
 				dprintk("%s: UNDEFINED ALGO !\n", __func__);
 				break;
 			}