linux-kernel - [PATCH] cx88xx: Fix lockup on suspend

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Date:	Thu, 04 Jan 2007 20:12:49 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	linux-kernel <linux-kernel@...r.kernel.org>, mchehab@...radead.org,
	v4l-dvb-maintainer@...uxtv.org
Subject: [PATCH] cx88xx: Fix lockup on suspend

Suspending with the cx88xx module loaded causes the system to lock up 
because the cx88_audio_thread kthread was missing a try_to_freeze() 
call, which caused it to go into a tight loop and result in softlockup 
when suspending. Fix that.

Signed-off-by: Robert Hancock <hancockr@...w.ca>

--- linux-2.6.20-rc3-git4-orig/drivers/media/video/cx88/cx88-tvaudio.c	2007-01-04 19:51:45.000000000 -0600
+++ linux-2.6.20-rc3-git4/drivers/media/video/cx88/cx88-tvaudio.c	2007-01-04 19:25:19.000000000 -0600
@@ -38,6 +38,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/errno.h>
+#include <linux/freezer.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/mm.h>
@@ -961,6 +962,7 @@ int cx88_audio_thread(void *data)
 		msleep_interruptible(1000);
 		if (kthread_should_stop())
 			break;
+		try_to_freeze();
 
 		/* just monitor the audio status for now ... */
 		memset(&t, 0, sizeof(t));



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