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Subject: Re: [PATCH -next] ASoC: samsung: midas_wm1811: Fix build error when
 CONFIG_GPIOLIB is not set
To:     Wei Yongjun <weiyongjun1@huawei.com>,
        Simon Shields <simon@lineageos.org>,
        Sylwester Nawrocki <s.nawrocki@samsung.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
Cc:     alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
        kernel-janitors@vger.kernel.org, Hulk Robot <hulkci@huawei.com>
References: <20210526144339.2392592-1-weiyongjun1@huawei.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Message-ID: <d1aad7a0-a27e-286f-1bcf-51b035d1d8ae@canonical.com>
Date:   Wed, 26 May 2021 11:49:26 -0400
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Precedence: bulk

On 26/05/2021 10:43, Wei Yongjun wrote:
> Fix build error when CONFIG_GPIOLIB is not set:
> 
> sound/soc/samsung/midas_wm1811.c: In function 'midas_fm_set':
> sound/soc/samsung/midas_wm1811.c:205:3: error:
>  implicit declaration of function 'gpiod_set_value_cansleep';
>  did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration]
>   205 |   gpiod_set_value_cansleep(priv->gpio_fm_sel, 1);
>       |   ^~~~~~~~~~~~~~~~~~~~~~~~
>       |   gpio_set_value_cansleep
> sound/soc/samsung/midas_wm1811.c: In function 'midas_probe':
> sound/soc/samsung/midas_wm1811.c:445:22: error:
>  implicit declaration of function 'devm_gpiod_get_optional';
>  did you mean 'devm_clk_get_optional'? [-Werror=implicit-function-declaration]
>   445 |  priv->gpio_fm_sel = devm_gpiod_get_optional(dev, "fm-sel", GPIOD_OUT_HIGH);
>       |                      ^~~~~~~~~~~~~~~~~~~~~~~
>       |                      devm_clk_get_optional

The fix does not match the error. The consumer.h has necessary stubs for
!GPIOLIB case.

To fix this error, you do not depend on GPIOLIB, but include proper
header (consumer.h). The dependency (with compile test) is still nice,
but for runtime fix, not build time, which is a separate patch.


Best regards,
Krzysztof

> sound/soc/samsung/midas_wm1811.c:445:61:
>  error: 'GPIOD_OUT_HIGH' undeclared (first use in this function);
>  did you mean 'GPIOF_INIT_HIGH'?
>   445 |  priv->gpio_fm_sel = devm_gpiod_get_optional(dev, "fm-sel", GPIOD_OUT_HIGH);
>       |                                                             ^~~~~~~~~~~~~~
>       |                                                             GPIOF_INIT_HIGH
> 
> Fixes: fd0ea9cd9698 ("ASoC: samsung: Add sound support for Midas boards")
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
> ---
>  sound/soc/samsung/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
> index a2221ebb1b6a..22be597b1dd9 100644
> --- a/sound/soc/samsung/Kconfig
> +++ b/sound/soc/samsung/Kconfig
> @@ -228,6 +228,7 @@ config SND_SOC_SAMSUNG_ARIES_WM8994
>  config SND_SOC_SAMSUNG_MIDAS_WM1811
>  	tristate "SoC I2S Audio support for Midas boards"
>  	depends on SND_SOC_SAMSUNG
> +	depends on GPIOLIB
>  	select SND_SAMSUNG_I2S
>  	select SND_SOC_WM8994
>  	help
>