[alsa-devel] [PATCH 1/3] ALSA: Fix handling of multiple msbits constraints on the same runtime

[Takashi Iwai]

At Mon, 29 Dec 2014 18:43:36 +0100,
Lars-Peter Clausen wrote:
> 
> If the sound card is made up of discrete components, each with their own
> driver (e.g. like in the ASoC case), we might end up with multiple msbits
> constraint rules installed. Currently this will result in msbits being set
> to whatever the last rule set it to.
> 
> This patch updates the behavior of the rule to choose the minimum (other
> than zero) of all the installed rules.
> 
> Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>

Thanks, applied all three patches now.  They were applied to
topic/msbits branch so that Mark can merge these more easily.


Takashi

> ---
>  sound/core/pcm_lib.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
> index ec9e786..b0c1535 100644
> --- a/sound/core/pcm_lib.c
> +++ b/sound/core/pcm_lib.c
> @@ -1300,7 +1300,7 @@ static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params,
>  	unsigned int msbits = l >> 16;
>  	struct snd_interval *i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS);
>  	if (snd_interval_single(i) && snd_interval_value(i) == width)
> -		params->msbits = msbits;
> +		params->msbits = min_not_zero(params->msbits, msbits);
>  	return 0;
>  }
>  
> -- 
> 1.8.0
>