From c28a30cf1dfe4df5abb1a5fa83c3e066569cb8fc Mon Sep 17 00:00:00 2001
From: Holger Waechtler <devnull@localhost>
Date: Mon, 2 Jun 2003 11:36:06 +0000
Subject: Deadlock. Bei einem blockierenden FE_GET_EVENT wird der fe-thread am
 weiterarbeiten gehindert. Folglich auch keine weiteren Events... found by
 wjoost

---
 linux/drivers/media/dvb/dvb-core/dvb_frontend.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/linux/drivers/media/dvb/dvb-core/dvb_frontend.c b/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
index ebc550147..2f7594734 100644
--- a/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -268,8 +268,14 @@ int dvb_frontend_get_event (struct dvb_frontend_data *fe,
                 if (flags & O_NONBLOCK)
                         return -EWOULDBLOCK;
 
+		up(&fe->sem);
+
                 ret = wait_event_interruptible (events->wait_queue,
                                                 events->eventw != events->eventr);
+
+        	if (down_interruptible (&fe->sem))
+			return -ERESTARTSYS;
+
                 if (ret < 0)
                         return ret;
         }
-- 
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