linux-kernel - Re: [alsa-devel] [PATCH]Change the AZX_MAX

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Message-ID: <alpine.LNX.2.00.1001280941120.25340@eeebox2.perex-int.cz>
Date:	Thu, 28 Jan 2010 09:48:44 +0100 (CET)
From:	Jaroslav Kysela <perex@...ex.cz>
To:	Wei Ni <wni@...dia.com>
cc:	'Takashi Iwai' <tiwai@...e.de>, 'akpm' <akpm@...ux-foundation.org>,
	'alsa-devel' <alsa-devel@...a-project.org>,
	'linux-kernel' <linux-kernel@...r.kernel.org>,
	'Pavel Hofman' <pavel.hofman@...ite.cz>
Subject: Re: [alsa-devel]  [PATCH]Change the AZX_MAX_PCMS to 10

On Thu, 28 Jan 2010, Wei Ni wrote:

> Hi, Takashi When I develop hdmi audio driver on the GT21x, I found a bug 
> in the had_intel.c In hda_codec.c, it has define "[HDA_PCM_TYPE_HDMI] = 
> { 3, 7, 8, 9, -1 },", it support up to device 9 for HDMI. But in 
> hda_intel.c, it only define AZX_MAX_PCMS as 8. So the GT21x have 4 hdmi 
> codecs, when run azx_attach_pcm_stream(), it will show error "Invalid 
> PCM device number 8", and "... number 9", and return "-EINVAL". We 
> should change the AZX_MAX_PCMS to 10.

I'm afraid, but having more than 8 PCM devices might cause problems when 
CONFIG_SND_DYNAMIC_MINORS is not set. At least, this condition 
(#if SNDRV_PCM_DEVICES < 10) should be handled in the HDA driver.

 					Jaroslav

-----
Jaroslav Kysela <perex@...ex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.

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