[PATCH 21/28] ASoC: ti: omap-mcbsp-st: Remove set, but unused variable 'w'

[PATCH 21/28] ASoC: ti: omap-mcbsp-st: Remove set, but unused variable 'w'

[Lee Jones]

Looks like 'w' has remained unchecked since the driver's inception.

Fixes the following W=1 kernel build warning(s):

 sound/soc/ti/omap-mcbsp-st.c: In function ‘omap_mcbsp_st_chgain’:
 sound/soc/ti/omap-mcbsp-st.c:145:6: warning: variable ‘w’ set but not used [-Wunused-but-set-variable]

Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Jarkko Nikula <jarkko.nikula@bitmer.com>
Cc: Samuel Ortiz <samuel.ortiz@nokia.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 sound/soc/ti/omap-mcbsp-st.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/ti/omap-mcbsp-st.c b/sound/soc/ti/omap-mcbsp-st.c
index 5a32b54bbf3bb..643ef7eb68fc8 100644
--- a/sound/soc/ti/omap-mcbsp-st.c
+++ b/sound/soc/ti/omap-mcbsp-st.c
@@ -142,10 +142,9 @@ static void omap_mcbsp_st_fir_write(struct omap_mcbsp *mcbsp, s16 *fir)
 
 static void omap_mcbsp_st_chgain(struct omap_mcbsp *mcbsp)
 {
-	u16 w;
 	struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
 
-	w = MCBSP_ST_READ(mcbsp, SSELCR);
+	MCBSP_ST_READ(mcbsp, SSELCR);
 
 	MCBSP_ST_WRITE(mcbsp, SGAINCR, ST_CH0GAIN(st_data->ch0gain) |
 		       ST_CH1GAIN(st_data->ch1gain));
-- 
2.25.1

Re: [PATCH 21/28] ASoC: ti: omap-mcbsp-st: Remove set, but unused variable 'w'

[Peter Ujfalusi]

Hi Lee,

On 07/07/2020 13.16, Lee Jones wrote:
> Looks like 'w' has remained unchecked since the driver's inception.
> 
> Fixes the following W=1 kernel build warning(s):
> 
>  sound/soc/ti/omap-mcbsp-st.c: In function ‘omap_mcbsp_st_chgain’:
>  sound/soc/ti/omap-mcbsp-st.c:145:6: warning: variable ‘w’ set but not used [-Wunused-but-set-variable]
> 
> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
> Cc: Jarkko Nikula <jarkko.nikula@bitmer.com>
> Cc: Samuel Ortiz <samuel.ortiz@nokia.com>
> Cc: linux-omap@vger.kernel.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
>  sound/soc/ti/omap-mcbsp-st.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/sound/soc/ti/omap-mcbsp-st.c b/sound/soc/ti/omap-mcbsp-st.c
> index 5a32b54bbf3bb..643ef7eb68fc8 100644
> --- a/sound/soc/ti/omap-mcbsp-st.c
> +++ b/sound/soc/ti/omap-mcbsp-st.c
> @@ -142,10 +142,9 @@ static void omap_mcbsp_st_fir_write(struct omap_mcbsp *mcbsp, s16 *fir)
>  
>  static void omap_mcbsp_st_chgain(struct omap_mcbsp *mcbsp)
>  {
> -	u16 w;
>  	struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
>  
> -	w = MCBSP_ST_READ(mcbsp, SSELCR);
> +	MCBSP_ST_READ(mcbsp, SSELCR);

The read can be removed at the same time.

>  	MCBSP_ST_WRITE(mcbsp, SGAINCR, ST_CH0GAIN(st_data->ch0gain) |
>  		       ST_CH1GAIN(st_data->ch1gain));
> 

- Péter

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