tree:   https://github.com/krzk/linux wip/sm8450
head:   ed23fc87de385a64d444db1058ad2a5844122740
commit: 30027acc430e49f3a1bdd943eeabc39692c57102 [34/101] soundwire: qcom: wait for fifo to be empty before
config: x86_64-allyesconfig
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/krzk/linux/commit/30027acc430e49f3a1bdd943eeabc39692c57102
        git remote add krzk-github https://github.com/krzk/linux
        git fetch --no-tags krzk-github wip/sm8450
        git checkout 30027acc430e49f3a1bdd943eeabc39692c57102
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/soundwire/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/soundwire/qcom.c: In function 'swrm_wait_for_wr_fifo_done':
>> drivers/soundwire/qcom.c:331:13: warning: unused variable 'rd_fifo_outstanding_cmds' [-Wunused-variable]
     331 |         u32 rd_fifo_outstanding_cmds;
         |             ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/rd_fifo_outstanding_cmds +331 drivers/soundwire/qcom.c

   327	
   328	static bool swrm_wait_for_wr_fifo_done(struct qcom_swrm_ctrl *swrm)
   329	{
   330		u32 fifo_outstanding_cmds, value;
 > 331		u32 rd_fifo_outstanding_cmds;
   332		int fifo_retry_count = SWR_OVERFLOW_RETRY_COUNT*2;
   333	
   334		/* Check for fifo overflow during write */
   335		swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value);
   336		fifo_outstanding_cmds = FIELD_GET(SWRM_WR_CMD_FIFO_CNT_MASK, value);
   337	
   338		if (fifo_outstanding_cmds) {
   339			while (fifo_retry_count) {
   340				usleep_range(500, 510);
   341				swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value);
   342				fifo_outstanding_cmds = FIELD_GET(SWRM_WR_CMD_FIFO_CNT_MASK, value);
   343				fifo_retry_count--;
   344				if (fifo_outstanding_cmds == 0)
   345					return true;
   346			}
   347		} else {
   348			return true;
   349		}
   350	
   351	
   352		return false;
   353	}
   354	

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