linux-kernel - Re: [alsa-devel] [PATCH 5/5] ALSA: uapi: Drop asound.h inclusion from asoc.h

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Date:   Mon, 30 Mar 2020 19:53:11 +0300
From:   "Dmitry V. Levin" <ldv@...linux.org>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] [PATCH 5/5] ALSA: uapi: Drop asound.h inclusion
 from asoc.h

Hi,

On Fri, Dec 20, 2019 at 04:34:15PM +0100, Takashi Iwai wrote:
> The asound.h isn't always available while asoc.h itself is distributed
> in alsa-lib package.  So we need to avoid the unnecessary inclusion of
> asound.h from there.
> 
> Signed-off-by: Takashi Iwai <tiwai@...e.de>
> ---
>  include/uapi/sound/asoc.h | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h
> index a74ca232f1fc..6048553c119d 100644
> --- a/include/uapi/sound/asoc.h
> +++ b/include/uapi/sound/asoc.h
> @@ -17,7 +17,6 @@
>  #define __LINUX_UAPI_SND_ASOC_H
>  
>  #include <linux/types.h>
> -#include <sound/asound.h>
>  
>  /*
>   * Maximum number of channels topology kcontrol can represent.

This has reached v5.6 and caused the following regression:

sound/asoc.h:214:14: error: 'SNDRV_CTL_ELEM_ID_NAME_MAXLEN' undeclared here (not in a function)
  214 |  char string[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];

Please revert or fix in some way to make the uapi header compileable again.

Thanks,

-- 
ldv