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From: Manu Abraham <abraham.manu@gmail.com>
To: linux-kernel@vger.kernel.org, v4l-dvb-maintainer@linuxtv.org,
	akpm@linux-foundation.org
Subject: DVB Update [PATCH 13/31] fix possible frontend deadlock
Date: Fri, 05 Sep 2008 00:25:17 +0400	[thread overview]
Message-ID: <48C0442D.9060702@gmail.com> (raw)

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>From 8c37315b9966e21894a76b61177727b462992d65 Mon Sep 17 00:00:00 2001
From: Manu Abraham <manu@linuxtv.org>
Date: Thu, 4 Sep 2008 13:45:00 +0200
Subject: [PATCH] DVB Fix possible frontend deadlock

The frontend will deadlock if an unspecified delivery system
is specified. Before returning error for the unspecified
delivery system, unlock and then exit.

From: Marco Schluessler <marco@lordzodiac.de>
Signed-off-by: Marco Schluessler <marco@lordzodiac.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>

 dvb_frontend.c |    1 +
 1 file changed, 1 insertion(+)


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[-- Type: text/x-patch, Size: 933 bytes --]

>From 8c37315b9966e21894a76b61177727b462992d65 Mon Sep 17 00:00:00 2001
From: Manu Abraham <manu@linuxtv.org>
Date: Thu, 4 Sep 2008 13:45:00 +0200
Subject: [PATCH] DVB Fix possible frontend deadlock

The frontend will deadlock if an unspecified delivery system
is specified. Before returning error for the unspecified
delivery system, unlock and then exit.

From: Marco Schluessler <marco@lordzodiac.de>
Signed-off-by: Marco Schluessler <marco@lordzodiac.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 125facb..313c639 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -1789,6 +1789,7 @@ static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
 				fepriv->max_drift = 0;
 				break;
 			default:
+				up(&fepriv->sem);
 				return -EINVAL;
 			}
 		}


                 reply	other threads:[~2008-09-04 20:27 UTC|newest]

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