linux-kernel - Re: [PATCH] ledtrig-cpu: use spin

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Date:	Thu, 18 Oct 2012 12:34:10 -0700
From:	Bryan Wu <cooloney@...il.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Miles Lane <miles.lane@...il.com>,
	akpm <akpm@...ux-foundation.org>,
	Linux LED Subsystem <linux-leds@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ledtrig-cpu: use spin_lock to replace mutex lock

On Thu, Oct 18, 2012 at 11:35 AM, Linus Walleij
<linus.walleij@...aro.org> wrote:
> On Thu, Oct 18, 2012 at 8:18 PM, Bryan Wu <cooloney@...il.com> wrote:
>
>> Mutex lock is not safe in atomic context like the bug reported by
>> Miles Lane:
> (...)
>> This patch replace mutex lock with spin lock which is safe for this case.
>>
>> Reported-by: Miles Lane <miles.lane@...il.com>
>> Reported-by: Rafael J. Wysocki <rjw@...k.pl>
>> Cc: Linus Walleij <linus.walleij@...aro.org>
>> Signed-off-by: Bryan Wu <cooloney@...il.com>
>
> Looks correct to me:
> Acked-by: Linus Walleij <linus.walleij@...aro.org>
>

Thanks, Linus.

Miles, could you please help to try this patch on your testing system?
I really appreciate it.

-Bryan
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