linux-kernel - Re: [PATCH] IIO: ADC: stm32-dfsdm: remove unused variable

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Date:   Wed, 17 Jan 2018 15:27:27 +0000
From:   Robin Murphy <robin.murphy@....com>
To:     Arnd Bergmann <arnd@...db.de>, Mark Brown <broonie@...nel.org>
Cc:     Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org,
        Arnaud Pouliquen <arnaud.pouliquen@...com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Hartmut Knaack <knaack.h@....de>,
        Jonathan Cameron <jic23@...nel.org>,
        Alexandre Torgue <alexandre.torgue@...com>
Subject: Re: [PATCH] IIO: ADC: stm32-dfsdm: remove unused variable

On 17/01/18 14:46, Arnd Bergmann wrote:
> A cleanup left one variable behind that is no longer needed and
> can be removed, as shown by the gcc warning:
> 
> drivers/iio/adc/stm32-dfsdm-core.c: In function 'stm32_dfsdm_probe':
> drivers/iio/adc/stm32-dfsdm-core.c:245:29: error: unused variable 'of_id' [-Werror=unused-variable]
> 
> Fixes: abaca806fd13 ("IIO: ADC: stm32-dfsdm: code optimization")

Weird, "git show abaca806fd13" contains this exact hunk. I guess it's 
actually the subsequent merge commit at fault...

Robin.

> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>   drivers/iio/adc/stm32-dfsdm-core.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c
> index 84277bcc465f..6290332cfd3f 100644
> --- a/drivers/iio/adc/stm32-dfsdm-core.c
> +++ b/drivers/iio/adc/stm32-dfsdm-core.c
> @@ -242,7 +242,6 @@ MODULE_DEVICE_TABLE(of, stm32_dfsdm_of_match);
>   static int stm32_dfsdm_probe(struct platform_device *pdev)
>   {
>   	struct dfsdm_priv *priv;
> -	const struct of_device_id *of_id;
>   	const struct stm32_dfsdm_dev_data *dev_data;
>   	struct stm32_dfsdm *dfsdm;
>   	int ret;
>