linux-kernel - Re: [patch] snd-pcsp: silent misleading warning

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Message-ID: <48306837.7030505@aknet.ru>
Date:	Sun, 18 May 2008 21:32:39 +0400
From:	Stas Sergeev <stsp@...et.ru>
To:	Takashi Iwai <tiwai@...e.de>
CC:	Roberto Oppedisano <roberto.oppedisano@...racom.it>,
	LKML <linux-kernel@...r.kernel.org>, alsa-devel@...a-project.org
Subject: Re: [patch] snd-pcsp: silent misleading warning

Hello.

Takashi Iwai wrote:
>>> [  417.338143] PCSP: playback_ptr inconsistent (4642 4661 18645)
>> It turns out that the buffer size you
>> get, is not evenly devided by period size.
>> 18645 % 4661 = 1.
>> That (wrongly) triggers the warning.
>> This may very well be an alsa bug, or
>> may not, but the code in the driver is
>> handling that properly, so there is no
>> need for such a verbose warning.
> The right fix would be to add a hw_constraint to align the buffer
> size.  The simplest way is to add the following in PCM open callback.
But what does this fix? That's only a
warning, the driver itself doesn't care
at all. The fix you propose, will need
more testing, at least a confirmation
from the reporter. I simply thought this
can't happen. Now you say its a perfectly
sane situation, and then there is nothing
to care about, just shut up the warning.
No?
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