Re: [PATCH v4 4/4] ASoC: qcom: add sdm845 sound card support

[Takashi Iwai]

On Wed, 01 Aug 2018 05:46:48 +0200,
kbuild test robot wrote:
> 
> Hi Rohit,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> [auto build test WARNING on asoc/for-next]
> [also build test WARNING on next-20180731]
> [cannot apply to v4.18-rc7]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Rohit-kumar/Add-support-for-audio-on-SDM845-SoC/20180801-082203
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
> reproduce:
>         # apt-get install sparse
>         make ARCH=x86_64 allmodconfig
>         make C=1 CF=-D__CHECK_ENDIAN__
> 
> 
> sparse warnings: (new ones prefixed by >>)
> 
> >> sound/soc/qcom/sdm845.c:193:27: sparse: incorrect type in argument 2 (different base types) @@    expected unsigned int [unsigned] val @@    got restricted snd_unsigned int [unsigned] val @@
>    sound/soc/qcom/sdm845.c:193:27:    expected unsigned int [unsigned] val
>    sound/soc/qcom/sdm845.c:193:27:    got restricted snd_pcm_format_t [usertype] <noident>
> 
> vim +193 sound/soc/qcom/sdm845.c
> 
>    181	
>    182	static int sdm845_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
>    183					struct snd_pcm_hw_params *params)
>    184	{
>    185		struct snd_interval *rate = hw_param_interval(params,
>    186						SNDRV_PCM_HW_PARAM_RATE);
>    187		struct snd_interval *channels = hw_param_interval(params,
>    188						SNDRV_PCM_HW_PARAM_CHANNELS);
>    189		struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
>    190	
>    191		rate->min = rate->max = DEFAULT_SAMPLE_RATE_48K;
>    192		channels->min = channels->max = 2;
>  > 193		snd_mask_set(fmt, SNDRV_PCM_FORMAT_S16_LE);

FYI, we have introduced a new helper, snd_mask_set_format(), just for
avoiding this sparse warning.  It's already in Mark's for-next tree.


thanks,

Takashi