[omap-audio:peter/linux-next-wip 24/85] drivers/dma/ti/k3-udma.c:5125:10: warning: variable 'burst_size' set but not used

[kernel test robot <lkp@intel.com>]

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tree:   https://github.com/omap-audio/linux-audio peter/linux-next-wip
head:   c02be942bf9f1f7fec284cf3b1266741e5964140
commit: 7e4a26181ab91aeb561a52a2ea28b62f1078a261 [24/85] dmaengine: ti: k3-udma: Add support for burst_size configuration for mem2mem
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/omap-audio/linux-audio/commit/7e4a26181ab91aeb561a52a2ea28b62f1078a261
        git remote add omap-audio https://github.com/omap-audio/linux-audio
        git fetch --no-tags omap-audio peter/linux-next-wip
        git checkout 7e4a26181ab91aeb561a52a2ea28b62f1078a261
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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

All warnings (new ones prefixed by >>):

   drivers/dma/ti/k3-udma.c: In function 'udma_get_copy_align':
>> drivers/dma/ti/k3-udma.c:5125:10: warning: variable 'burst_size' set but not used [-Wunused-but-set-variable]
    5125 |  u8 tpl, burst_size;
         |          ^~~~~~~~~~

vim +/burst_size +5125 drivers/dma/ti/k3-udma.c

  5121	
  5122	static enum dmaengine_alignment udma_get_copy_align(struct udma_dev *ud)
  5123	{
  5124		const struct udma_match_data *match_data = ud->match_data;
> 5125		u8 tpl, burst_size;
  5126	
  5127		if (!match_data->enable_memcpy_support)
  5128			return DMAENGINE_ALIGN_8_BYTES;
  5129	
  5130		/* Get the highest TPL level the device supports for memcpy */
  5131		if (ud->bchan_cnt) {
  5132			tpl = udma_get_chan_tpl_index(&ud->bchan_tpl, 0);
  5133		} else if (ud->tchan_cnt) {
  5134			tpl = udma_get_chan_tpl_index(&ud->tchan_tpl, 0);
  5135		} else {
  5136			return DMAENGINE_ALIGN_8_BYTES;
  5137		}
  5138	
  5139		burst_size = match_data->burst_size[tpl];
  5140	
  5141		switch (match_data->burst_size[tpl]) {
  5142			case TI_SCI_RM_UDMAP_CHAN_BURST_SIZE_256_BYTES:
  5143				return DMAENGINE_ALIGN_256_BYTES;
  5144			case TI_SCI_RM_UDMAP_CHAN_BURST_SIZE_128_BYTES:
  5145				return DMAENGINE_ALIGN_128_BYTES;
  5146			case TI_SCI_RM_UDMAP_CHAN_BURST_SIZE_64_BYTES:
  5147			fallthrough;
  5148			default:
  5149				return DMAENGINE_ALIGN_64_BYTES;
  5150		}
  5151	}
  5152	

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

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