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

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Message-ID: <CACRpkdapB5x2MEKKvDU2MBKPVKXwYCx+HDYFUcY0vskeVOxPTg@mail.gmail.com>
Date:	Thu, 18 Oct 2012 20:35:29 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Bryan Wu <cooloney@...il.com>
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 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>

Yours,
Linus Walleij
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