linux-kernel - Re: mmotm 2008-11-13-17-22 uploaded (pc-speaker)

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Date:	Fri, 14 Nov 2008 09:03:14 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: mmotm 2008-11-13-17-22 uploaded (pc-speaker)

On Fri, 2008-11-14 at 07:47 +0100, Takashi Iwai wrote:
> At Fri, 14 Nov 2008 07:36:54 +0100,
> I wrote:
> > 
> > At Thu, 13 Nov 2008 21:18:42 -0800,
> > Randy Dunlap wrote:
> > > 
> > > 
> > > mmotm-2008-1113-1722/sound/drivers/pcsp/pcsp.c: In function 'snd_card_pcsp_probe':
> > > mmotm-2008-1113-1722/sound/drivers/pcsp/pcsp.c:99: error: 'HRTIMER_CB_IRQSAFE' undeclared (first use in this function)
> > > 
> > > # CONFIG_SND_HRTIMER is not set
> > 
> > snd-pcsp and CONFIG_SND_HRTIMER are independent.
> > The snd-pcsp driver code isn't changed over weeks, thus it must be the
> > change in hrtimer side.
> 
> It's turned out to be the recent commint in the upstream:
> 
>   commit 621a0d5207c18012cb39932f2d9830a11a6cb03d
>   Author: Peter Zijlstra <a.p.zijlstra@...llo.nl>
>   Date:   Wed Nov 12 09:36:35 2008 +0100
> 
>     hrtimer: clean up unused callback modes
> 
>     Impact: cleanup
> 
>     git grep HRTIMER_CB_IRQSAFE revealed half the callback modes are actually
>     unused.
> 
>     Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
>     Signed-off-by: Ingo Molnar <mingo@...e.hu>
> 
> This hits on snd-pcsp driver on linux-next, since it was switched to
> use this dropped flag.  Now we get a build error.
> 
> Can this commit be reverted?

I think we determined the silly pc speaker driver should be using the
SOFTIRQ timer, why was this changed back again?

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