[alsa-devel] [PATCH] hda-emu: Add support for channel mapping API

David Henningsson david.henningsson at canonical.com
Mon Sep 17 12:23:30 CEST 2012

On 09/17/2012 12:18 PM, Takashi Iwai wrote:
> At Mon, 17 Sep 2012 11:56:37 +0200,
> David Henningsson wrote:
>> Hi Takashi,
>> I tried to make hda-emu compile with the latest changes to the HDA driver.
>> This is the result. It compiles, but when running any codec, I get the error
>> "Control element Playback Channel Map:0 already exists!".
>> I'm unsure whether this is a problem in the driver or in my simple copy-paste
>> attempt to make this work.
>> Can you offer some insight?
> It's an issue in hda-emu.  For simplicity, hda-emu didn't touch the
> ALSA PCM instance at all, so pcm->number is always zero.
> An additional patch below should fix the problem.

Thanks, attaching modified patch.

David Henningsson, Canonical Ltd.
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