Hi Vijendar,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on asoc/for-next]
[also build test WARNING on v5.7-rc6 next-20200518]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Vijendar-Mukunda/Add-Renoir-ACP-driver/20200519-012848
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

sound/soc/amd/renoir/acp3x-pdm-dma.c: In function 'stop_pdm_dma':
>> sound/soc/amd/renoir/acp3x-pdm-dma.c:153:34: warning: variable 'pdm_fifo_flush' set but not used [-Wunused-but-set-variable]
u32 pdm_enable, pdm_dma_enable, pdm_fifo_flush;
^~~~~~~~~~~~~~

vim +/pdm_fifo_flush +153 sound/soc/amd/renoir/acp3x-pdm-dma.c

041ae75cda4ae70 Vijendar Mukunda 2020-05-19  150  
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  151  static int stop_pdm_dma(void __iomem *acp_base)
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  152  {
041ae75cda4ae70 Vijendar Mukunda 2020-05-19 @153  	u32 pdm_enable, pdm_dma_enable, pdm_fifo_flush;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  154  	int timeout;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  155  
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  156  	pdm_enable = 0x00;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  157  	pdm_dma_enable  = 0x00;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  158  	pdm_fifo_flush = 0x00;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  159  
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  160  	pdm_enable = rn_readl(acp_base + ACP_WOV_PDM_ENABLE);
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  161  	pdm_dma_enable = rn_readl(acp_base + ACP_WOV_PDM_DMA_ENABLE);
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  162  	if (pdm_dma_enable & 0x01) {
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  163  		pdm_dma_enable = 0x02;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  164  		rn_writel(pdm_dma_enable, acp_base + ACP_WOV_PDM_DMA_ENABLE);
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  165  		pdm_dma_enable = 0x00;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  166  		timeout = 0;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  167  		while (++timeout < ACP_COUNTER) {
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  168  			pdm_dma_enable = rn_readl(acp_base +
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  169  						  ACP_WOV_PDM_DMA_ENABLE);
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  170  			if ((pdm_dma_enable & 0x02) == 0x00)
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  171  				break;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  172  			udelay(DELAY_US);
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  173  		}
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  174  		if (timeout == ACP_COUNTER)
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  175  			return -ETIMEDOUT;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  176  	}
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  177  	if (pdm_enable == ACP_PDM_ENABLE) {
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  178  		pdm_enable = ACP_PDM_DISABLE;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  179  		rn_writel(pdm_enable, acp_base + ACP_WOV_PDM_ENABLE);
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  180  	}
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  181  	rn_writel(0x01, acp_base + ACP_WOV_PDM_FIFO_FLUSH);
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  182  	return 0;
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  183  }
041ae75cda4ae70 Vijendar Mukunda 2020-05-19  184  

:::::: The code@line 153 was first introduced by commit
:::::: 041ae75cda4ae7035ab23ccf422dc5229871e720 ASoC: amd: add ACP PDM DMA driver dai ops

:::::: TO: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
:::::: CC: 0day robot <lkp@intel.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org