linux-kernel - Re: [patch 01/21] V4L: cx88: Fix lockup on suspend

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Date:	Wed, 21 Feb 2007 20:14:16 -0500
From:	Michael Krufky <mkrufky@...uxtv.org>
To:	Chuck Ebbert <cebbert@...hat.com>
CC:	Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org,
	stable@...nel.org, Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	Theodore Ts'o <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Robert Hancock <hancockr@...w.ca>,
	Mauro Carvalho Chehab <mchehab@...radead.org>
Subject: Re: [patch 01/21] V4L: cx88: Fix lockup on suspend

Chuck Ebbert wrote:
> Greg KH wrote:
>> -stable review patch.  If anyone has any objections, please let us know.
>>
>> ------------------
>> 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.
>>
>> (cherry picked from commit a96afb3e9428f2e7463344f12dbc85faf08e2e09)
>>
>> Signed-off-by: Robert Hancock <hancockr@...w.ca>
>> Signed-off-by: Mauro Carvalho Chehab <mchehab@...radead.org>
>> Signed-off-by: Michael Krufky <mkrufky@...uxtv.org>
>> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
>>
>> ---
>>  drivers/media/video/cx88/cx88-tvaudio.c |    2 ++
>>  1 file changed, 2 insertions(+)
>>
>> --- linux-2.6.19.4.orig/drivers/media/video/cx88/cx88-tvaudio.c
>> +++ linux-2.6.19.4/drivers/media/video/cx88/cx88-tvaudio.c
>> @@ -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>
>> @@ -974,6 +975,7 @@ 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));
>>
> 
> drivers/media/video/cx88/cx88-tvaudio.c:41:27: error: linux/freezer.h: No such file or directory
> make[4]: *** [drivers/media/video/cx88/cx88-tvaudio.o] Error 1
> make[3]: *** [drivers/media/video/cx88] Error 2
> make[3]: *** Waiting for unfinished jobs....
> 

Yikes...  This one shouldn't have been sent to 2.6.18.y nor 2.6.19.y ... tree-mixup :-/

Please drop this one.  Thanks, Chuck.

Sorry about that...

-Mike Krufky
-
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