linux-kernel - Re: [PATCH -next] ASoC: Intel: fix unused-variable warning in probe

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Message-ID: <39b0bfef-be7d-05a9-d964-19a74757bb8d@intel.com>
Date:   Tue, 13 Sep 2022 16:03:35 +0200
From:   Cezary Rojewski <cezary.rojewski@...el.com>
To:     Gaosheng Cui <cuigaosheng1@...wei.com>,
        <pierre-louis.bossart@...ux.intel.com>,
        <liam.r.girdwood@...ux.intel.com>,
        <peter.ujfalusi@...ux.intel.com>,
        <yung-chuan.liao@...ux.intel.com>,
        <ranjani.sridharan@...ux.intel.com>,
        <kai.vehmanen@...ux.intel.com>, <broonie@...nel.org>,
        <perex@...ex.cz>, <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] ASoC: Intel: fix unused-variable warning in
 probe_codec

On 2022-08-22 5:51 AM, Gaosheng Cui wrote:
> In configurations with CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC=n,
> gcc warns about an unused variable:
> 
> sound/soc/intel/skylake/skl.c: In function ‘probe_codec’:
> sound/soc/intel/skylake/skl.c:729:18: error: unused variable ‘skl’ [-Werror=unused-variable]
>    struct skl_dev *skl = bus_to_skl(bus);
>                    ^~~
> cc1: all warnings being treated as errors
> 
> Fixes: 3fd63658caed9 ("ASoC: Intel: Drop hdac_ext usage for codec device creation")
> Signed-off-by: Gaosheng Cui <cuigaosheng1@...wei.com>

Thanks for the fix.

Acked-by: Cezary Rojewski <cezary.rojewski@...el.com>

> ---
>   sound/soc/intel/skylake/skl.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
> index c7c1cad2a753..52a041d6144c 100644
> --- a/sound/soc/intel/skylake/skl.c
> +++ b/sound/soc/intel/skylake/skl.c
> @@ -726,8 +726,8 @@ static int probe_codec(struct hdac_bus *bus, int addr)
>   	unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
>   		(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
>   	unsigned int res = -1;
> -	struct skl_dev *skl = bus_to_skl(bus);
>   #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC)
> +	struct skl_dev *skl = bus_to_skl(bus);
>   	struct hdac_hda_priv *hda_codec;
>   #endif
>   	struct hda_codec *codec;