linux-kernel - Re: [PATCH] ASoC: Intel: atom: remove unused 'sst_mix_voip

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Date:   Fri, 17 Apr 2020 08:43:12 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Jason Yan <yanaijie@...wei.com>, cezary.rojewski@...el.com,
        liam.r.girdwood@...ux.intel.com, yang.jie@...ux.intel.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        hdegoede@...hat.com, tglx@...utronix.de,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Cc:     Hulk Robot <hulkci@...wei.com>
Subject: Re: [PATCH] ASoC: Intel: atom: remove unused 'sst_mix_voip_controls'



On 4/17/20 4:23 AM, Jason Yan wrote:
> Fix the following gcc warning:
> 
> sound/soc/intel/atom/sst-atom-controls.c:710:30: warning:
> ‘sst_mix_voip_controls’ defined but not used [-Wunused-const-variable=]
>   SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_voip_controls);

I'd prefer it if we didn't change this but only added __maybe_unused in 
the macro.

This is 2013/2014 legacy stuff, some parts were not upstreamed and this 
was used by out-of-tree Android variations, and I don't know the 
consequences of taking this out.

Better just squelch the warning but not change anything, no?

> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Jason Yan <yanaijie@...wei.com>
> ---
>   sound/soc/intel/atom/sst-atom-controls.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/sound/soc/intel/atom/sst-atom-controls.c b/sound/soc/intel/atom/sst-atom-controls.c
> index 69f3af4524ab..541f0059ba7a 100644
> --- a/sound/soc/intel/atom/sst-atom-controls.c
> +++ b/sound/soc/intel/atom/sst-atom-controls.c
> @@ -707,7 +707,6 @@ SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_pcm2_controls);
>   SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_sprot_l0_controls);
>   SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_media_l1_controls);
>   SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_media_l2_controls);
> -SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_voip_controls);
>   SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_codec0_controls);
>   SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_codec1_controls);
>   SST_SBA_DECLARE_MIX_CONTROLS(sst_mix_modem_controls);
>