linux-kernel - Re: [PATCH] sony_pi: Remove the BKL from sonypi_misc

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Message-ID: <20091019223039.GA4367@kamineko.org>
Date:	Tue, 20 Oct 2009 07:30:39 +0900
From:	Mattia Dongili <malattia@...ux.it>
To:	Arnd Bergmann <arndbergmann@...glemail.com>
Cc:	John Kacur <jkacur@...hat.com>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH] sony_pi: Remove the BKL from sonypi_misc_open

On Tue, Oct 20, 2009 at 12:00:24AM +0200, Arnd Bergmann wrote:
> On Monday 19 October 2009, John Kacur wrote:
> > How does this look? (Version 2 of the patch follows)
> 
> Looks good now.

Looks alright to me too.

> > From efd07cfcd021b4438d83d383ab81f9b35cb41eb9 Mon Sep 17 00:00:00 2001
> > From: John Kacur <jkacur@...hat.com>
> > Date: Sun, 18 Oct 2009 23:49:49 +0200
> > Subject: [PATCH] sony_pi: Remove the BKL from sonypi_misc_open
> > 
> > The BKL is in this function because of the BKL pushdown
> > (see commit f8f2c79d594463427f7114cedb1555110d547d89)
> > 
> > It is not needed here because the mutex_lock sonypi_device.lock
> > provides the necessary locking.
> > 
> > sonpi_misc_ioctl can be converted to unlocked ioctls since it relies on
> > its own locking (the mutex sonypi_device.lock) and not the bkl
> > 
> > Signed-off-by: John Kacur <jkacur@...hat.com>
> 
> Acked-by: Arnd Bergmann <arnd@...db.de>

Acked-by: Mattia Dongili <malattia@...ux.it>
-- 
mattia
:wq!
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