diff mbox

[next] ASoC: samsung: remove redundant pointer cpu_dai

Message ID 20180313133626.31286-1-colin.king@canonical.com (mailing list archive)
State Accepted
Headers show

Commit Message

Colin King March 13, 2018, 1:36 p.m. UTC 
From: Colin Ian King <colin.king@canonical.com>

The pointer cpu_dai is assigned a value but the pointer is never
read, hence it is redundant and can be removed.

Cleans up clang warning:
sound/soc/samsung/snow.c:45:2: warning: Value stored to 'cpu_dai' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 sound/soc/samsung/snow.c | 2 --
 1 file changed, 2 deletions(-)

Comments

Mark Brown March 13, 2018, 4:21 p.m. UTC | #1 
On Tue, Mar 13, 2018 at 01:36:26PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The pointer cpu_dai is assigned a value but the pointer is never
> read, hence it is redundant and can be removed.

There's some subsequent patches to that driver which I think provide an
alternative fix for this.
Colin King March 13, 2018, 4:22 p.m. UTC | #2 
On 13/03/18 16:21, Mark Brown wrote:
> On Tue, Mar 13, 2018 at 01:36:26PM +0000, Colin King wrote:
>> From: Colin Ian King <colin.king@canonical.com>
>>
>> The pointer cpu_dai is assigned a value but the pointer is never
>> read, hence it is redundant and can be removed.
> 
> There's some subsequent patches to that driver which I think provide an
> alternative fix for this.
> 
OK, glad it's been resolved.
kernel test robot March 14, 2018, 5:45 p.m. UTC | #3 
Hi Colin,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16-rc4]
[cannot apply to next-20180314]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Colin-King/ASoC-samsung-remove-redundant-pointer-cpu_dai/20180314-232924
config: sh-allmodconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sh 

All errors (new ones prefixed by >>):

   sound/soc/samsung/snow.c: In function 'snow_late_probe':
>> sound/soc/samsung/snow.c:52:31: error: 'cpu_dai' undeclared (first use in this function); did you mean 'cpu_data'?
     ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
                                  ^~~~~~~
                                  cpu_data
   sound/soc/samsung/snow.c:52:31: note: each undeclared identifier is reported only once for each function it appears in

vim +52 sound/soc/samsung/snow.c

31c26a6a Tushar Behera 2014-04-28  35  
31c26a6a Tushar Behera 2014-04-28  36  static int snow_late_probe(struct snd_soc_card *card)
31c26a6a Tushar Behera 2014-04-28  37  {
5015920a Mengdong Lin  2015-11-18  38  	struct snd_soc_pcm_runtime *rtd;
5015920a Mengdong Lin  2015-11-18  39  	struct snd_soc_dai *codec_dai;
31c26a6a Tushar Behera 2014-04-28  40  	int ret;
31c26a6a Tushar Behera 2014-04-28  41  
5015920a Mengdong Lin  2015-11-18  42  	rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
5015920a Mengdong Lin  2015-11-18  43  	codec_dai = rtd->codec_dai;
5015920a Mengdong Lin  2015-11-18  44  
31c26a6a Tushar Behera 2014-04-28  45  	/* Set the MCLK rate for the codec */
31c26a6a Tushar Behera 2014-04-28  46  	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
31c26a6a Tushar Behera 2014-04-28  47  					FIN_PLL_RATE, SND_SOC_CLOCK_IN);
31c26a6a Tushar Behera 2014-04-28  48  	if (ret < 0)
31c26a6a Tushar Behera 2014-04-28  49  		return ret;
31c26a6a Tushar Behera 2014-04-28  50  
31c26a6a Tushar Behera 2014-04-28  51  	/* Select I2S Bus clock to set RCLK and BCLK */
31c26a6a Tushar Behera 2014-04-28 @52  	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
31c26a6a Tushar Behera 2014-04-28  53  					0, SND_SOC_CLOCK_IN);
31c26a6a Tushar Behera 2014-04-28  54  	if (ret < 0)
31c26a6a Tushar Behera 2014-04-28  55  		return ret;
31c26a6a Tushar Behera 2014-04-28  56  
31c26a6a Tushar Behera 2014-04-28  57  	return 0;
31c26a6a Tushar Behera 2014-04-28  58  }
31c26a6a Tushar Behera 2014-04-28  59  

:::::: The code at line 52 was first introduced by commit
:::::: 31c26a6a842d541ca475a482112dda5993df2374 ASoC: samsung: Add sound card driver for Snow board

:::::: TO: Tushar Behera <tushar.behera@linaro.org>
:::::: CC: Mark Brown <broonie@linaro.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
kernel test robot March 14, 2018, 6:08 p.m. UTC | #4 
Hi Colin,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16-rc4]
[cannot apply to next-20180314]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Colin-King/ASoC-samsung-remove-redundant-pointer-cpu_dai/20180314-232924
config: arm-allyesconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   sound/soc/samsung/snow.c: In function 'snow_late_probe':
>> sound/soc/samsung/snow.c:52:31: error: 'cpu_dai' undeclared (first use in this function); did you mean 'cpu_tlb'?
     ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
                                  ^~~~~~~
                                  cpu_tlb
   sound/soc/samsung/snow.c:52:31: note: each undeclared identifier is reported only once for each function it appears in

vim +52 sound/soc/samsung/snow.c

31c26a6a Tushar Behera 2014-04-28  35  
31c26a6a Tushar Behera 2014-04-28  36  static int snow_late_probe(struct snd_soc_card *card)
31c26a6a Tushar Behera 2014-04-28  37  {
5015920a Mengdong Lin  2015-11-18  38  	struct snd_soc_pcm_runtime *rtd;
5015920a Mengdong Lin  2015-11-18  39  	struct snd_soc_dai *codec_dai;
31c26a6a Tushar Behera 2014-04-28  40  	int ret;
31c26a6a Tushar Behera 2014-04-28  41  
5015920a Mengdong Lin  2015-11-18  42  	rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
5015920a Mengdong Lin  2015-11-18  43  	codec_dai = rtd->codec_dai;
5015920a Mengdong Lin  2015-11-18  44  
31c26a6a Tushar Behera 2014-04-28  45  	/* Set the MCLK rate for the codec */
31c26a6a Tushar Behera 2014-04-28  46  	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
31c26a6a Tushar Behera 2014-04-28  47  					FIN_PLL_RATE, SND_SOC_CLOCK_IN);
31c26a6a Tushar Behera 2014-04-28  48  	if (ret < 0)
31c26a6a Tushar Behera 2014-04-28  49  		return ret;
31c26a6a Tushar Behera 2014-04-28  50  
31c26a6a Tushar Behera 2014-04-28  51  	/* Select I2S Bus clock to set RCLK and BCLK */
31c26a6a Tushar Behera 2014-04-28 @52  	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
31c26a6a Tushar Behera 2014-04-28  53  					0, SND_SOC_CLOCK_IN);
31c26a6a Tushar Behera 2014-04-28  54  	if (ret < 0)
31c26a6a Tushar Behera 2014-04-28  55  		return ret;
31c26a6a Tushar Behera 2014-04-28  56  
31c26a6a Tushar Behera 2014-04-28  57  	return 0;
31c26a6a Tushar Behera 2014-04-28  58  }
31c26a6a Tushar Behera 2014-04-28  59  

:::::: The code at line 52 was first introduced by commit
:::::: 31c26a6a842d541ca475a482112dda5993df2374 ASoC: samsung: Add sound card driver for Snow board

:::::: TO: Tushar Behera <tushar.behera@linaro.org>
:::::: CC: Mark Brown <broonie@linaro.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
diff mbox

Patch

diff --git a/sound/soc/samsung/snow.c b/sound/soc/samsung/snow.c
index fc62110f500f..47b904e2b8c3 100644
--- a/sound/soc/samsung/snow.c
+++ b/sound/soc/samsung/snow.c
@@ -37,12 +37,10 @@  static int snow_late_probe(struct snd_soc_card *card)
 {
 	struct snd_soc_pcm_runtime *rtd;
 	struct snd_soc_dai *codec_dai;
-	struct snd_soc_dai *cpu_dai;
 	int ret;
 
 	rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
 	codec_dai = rtd->codec_dai;
-	cpu_dai = rtd->cpu_dai;
 
 	/* Set the MCLK rate for the codec */
 	ret = snd_soc_dai_set_sysclk(codec_dai, 0,