Re: [PATCH v3 2/2] spi: dw: Add dma controller capability checks

[Joy Chakraborty <joychakr@xxxxxxxxxx>]

Hi Serge(y)

On Mon, Mar 27, 2023 at 4:59 AM kernel test robot <lkp@xxxxxxxxx> wrote:
>
> Hi Joy,
>
> Thank you for the patch! Perhaps something to improve:
>
> [auto build test WARNING on broonie-spi/for-next]
> [also build test WARNING on linus/master v6.3-rc4 next-20230324]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>
> url:    https://github.com/intel-lab-lkp/linux/commits/Joy-Chakraborty/spi-dw-Add-32-bpw-support-to-DW-DMA-Controller/20230327-013645
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
> patch link:    https://lore.kernel.org/r/20230326173511.710749-3-joychakr%40google.com
> patch subject: [PATCH v3 2/2] spi: dw: Add dma controller capability checks
> config: arc-randconfig-s041-20230326 (https://download.01.org/0day-ci/archive/20230327/202303270715.w9sMJhIh-lkp@xxxxxxxxx/config)
> compiler: arceb-elf-gcc (GCC) 12.1.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # apt-get install sparse
>         # sparse version: v0.6.4-39-gce1a6720-dirty
>         # https://github.com/intel-lab-lkp/linux/commit/9962c1acd23cb0766a09948c1bee4f29950b8a96
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Joy-Chakraborty/spi-dw-Add-32-bpw-support-to-DW-DMA-Controller/20230327-013645
>         git checkout 9962c1acd23cb0766a09948c1bee4f29950b8a96
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arc olddefconfig
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arc SHELL=/bin/bash drivers/spi/
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
> | Link: https://lore.kernel.org/oe-kbuild-all/202303270715.w9sMJhIh-lkp@xxxxxxxxx/
>
> sparse warnings: (new ones prefixed by >>)
> >> drivers/spi/spi-dw-dma.c:241:56: sparse: sparse: marked inline, but without a definition
>
> vim +241 drivers/spi/spi-dw-dma.c

Indeed I have marked it inline in the function prototype.
Removing the same and sending a V4 patch.

>
> f89a6d8f43ebe9 drivers/spi/spi-dw-mid.c Andy Shevchenko 2015-03-09  240
> 57784411728ff4 drivers/spi/spi-dw-dma.c Serge Semin     2020-05-29 @241  static enum dma_slave_buswidth dw_spi_dma_convert_width(u8 n_bytes)
> 57784411728ff4 drivers/spi/spi-dw-dma.c Serge Semin     2020-05-29  242  {
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  243         switch (n_bytes) {
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  244         case 1:
> e31abce778bc05 drivers/spi/spi-dw-mid.c Andy Shevchenko 2015-03-09  245                 return DMA_SLAVE_BUSWIDTH_1_BYTE;
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  246         case 2:
> e31abce778bc05 drivers/spi/spi-dw-mid.c Andy Shevchenko 2015-03-09  247                 return DMA_SLAVE_BUSWIDTH_2_BYTES;
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  248         case 3:
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  249         case 4:
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  250                 return DMA_SLAVE_BUSWIDTH_4_BYTES;
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  251         default:
> e31abce778bc05 drivers/spi/spi-dw-mid.c Andy Shevchenko 2015-03-09  252                 return DMA_SLAVE_BUSWIDTH_UNDEFINED;
> e31abce778bc05 drivers/spi/spi-dw-mid.c Andy Shevchenko 2015-03-09  253         }
> 80de96dae70648 drivers/spi/spi-dw-dma.c Joy Chakraborty 2023-03-26  254  }
> e31abce778bc05 drivers/spi/spi-dw-mid.c Andy Shevchenko 2015-03-09  255
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests

Thanks
Joy