Re: [PATCH 08/19] ASoC: kirkwood: Don't set unused struct snd_pcm_hardware fields - Jean-Francois Moine

From: Jean-Francois Moine <moinejf@free.fr>
To: Lars-Peter Clausen <lars@metafoo.de>
Cc: alsa-devel@alsa-project.org, Mark Brown <broonie@kernel.org>,
	Liam Girdwood <lgirdwood@gmail.com>
Subject: Re: [PATCH 08/19] ASoC: kirkwood: Don't set unused struct snd_pcm_hardware fields
Date: Fri, 20 Dec 2013 19:05:06 +0100	[thread overview]
Message-ID: <20131220190506.2adb7a52@armhf> (raw)
In-Reply-To: <1387545625-19240-8-git-send-email-lars@metafoo.de>

On Fri, 20 Dec 2013 14:20:14 +0100
Lars-Peter Clausen <lars@metafoo.de> wrote:

> The ASoC core assumes that the PCM component of the ASoC card transparently
> moves data around and does not impose any restrictions on the memory layout or
> the transfer speed. It ignores all fields from the snd_pcm_hardware struct for
> the PCM driver that are related to this. Setting these fields in the PCM driver
> might suggest otherwise though, so rather not set them.
> 
> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
> Cc: Jean-Francois Moine <moinejf@free.fr>
> ---
>  sound/soc/kirkwood/kirkwood-dma.c | 16 ----------------
>  1 file changed, 16 deletions(-)
> 
> diff --git a/sound/soc/kirkwood/kirkwood-dma.c b/sound/soc/kirkwood/kirkwood-dma.c
> index 4af1936..aac22fc 100644
> --- a/sound/soc/kirkwood/kirkwood-dma.c
> +++ b/sound/soc/kirkwood/kirkwood-dma.c
	[snip]
> @@ -43,12 +33,6 @@ static struct snd_pcm_hardware kirkwood_dma_snd_hw = {
>  		 SNDRV_PCM_INFO_MMAP_VALID |
>  		 SNDRV_PCM_INFO_BLOCK_TRANSFER |
>  		 SNDRV_PCM_INFO_PAUSE),
> -	.formats		= KIRKWOOD_FORMATS,
> -	.rates			= KIRKWOOD_RATES,
> -	.rate_min		= 8000,
> -	.rate_max		= 384000,
> -	.channels_min		= 1,
> -	.channels_max		= 8,
>  	.buffer_bytes_max	= KIRKWOOD_SND_MAX_BUFFER_BYTES,
>  	.period_bytes_min	= KIRKWOOD_SND_MIN_PERIOD_BYTES,
>  	.period_bytes_max	= KIRKWOOD_SND_MAX_PERIOD_BYTES,

Lars,

You removed too many things. The 'formats' field is mandatory.

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/
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