linux-kernel - Re: [PATCH 3/3] sound: push BKL into open functions

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Message-ID: <s5h1vb8pugz.wl%tiwai@suse.de>
Date:	Mon, 12 Jul 2010 17:53:32 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Jaroslav Kysela <perex@...ex.cz>,
	LKML <linux-kernel@...r.kernel.org>,
	John Kacur <jkacur@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	ALSA development <alsa-devel@...a-project.org>
Subject: Re: [PATCH 3/3] sound: push BKL into open functions

At Sun, 11 Jul 2010 12:16:36 +0200,
Arnd Bergmann wrote:
> 
> This moves the lock_kernel() call from soundcore_open
> to the individual OSS device drivers, where we can deal
> with it one driver at a time if needed, or just kill
> off the drivers.
> 
> All core components in ALSA already provide
> adequate locking in their open()-functions
> and do not require the big kernel lock, so
> there is no need to add the BKL there.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> On Sunday 11 July 2010 09:15:22 Jaroslav Kysela wrote:
> > I don't see any reason (benefit) to add gotos to these two functions.
> > 
> Sorry, I had removed them and then forgot the git-add before
> creating the emails. Originally, I had two patches, one for
> pushing down the BKL into every sound driver (hence the goto)
> and a second patch to remove the BKL again from all the native
> alsa drivers. If you prefer, I can also give you the separate
> patches, but I figured that since none of the ALSA drivers needs
> the BKL, the combined patch would be better.
> 
> This is the corrected combined version.

Thanks.  I applied now to sound git tree (with a minor fix of
coding-style in sound/oss/au1550_ac97.c).

BTW, do you have an updated patch for native_ioctl conversion wrt
sound/*?


Takashi
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