linux-kernel - Re: [PATCH -tip] pcm_native: label out defined but not used

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Message-ID: <s5hej30g0cf.wl%tiwai@suse.de>
Date:	Wed, 01 Oct 2008 10:56:32 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Steven Noonan <steven@...inklabs.net>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -tip] pcm_native: label out defined but not used

At Wed, 1 Oct 2008 10:32:24 +0200,
Ingo Molnar wrote:
> 
> 
> * Takashi Iwai <tiwai@...e.de> wrote:
> 
> > At Wed, 1 Oct 2008 09:59:21 +0200,
> > Ingo Molnar wrote:
> > > 
> > > 
> > > (Cc:-ed Taskashi for this ALSA cleanup patch.)
> > 
> > This label is used when the debug option is enabled.
> 
> ah, indeed:
> 
>         snd_assert(substream != NULL, goto out);
> 
> if then i'd suggest to clean it up like this:
> 
>         if (snd_assert(substream != NULL))
> 		goto out;
> 
> this is how DEBUG_LOCKS_WARN_ON() is used in kernel/lockdep.c for 
> example. Putting code flow side-effects into debug macros looks a bit 
> weird.

Yeah, already a similar change was done in the latest ALSA tree :)


thanks,

Takashi
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