Re: [PATCH v3 2/3] can: rcar_canfd: Add support for RZ/G2L family

On 25.07.2021 13:39:37, kernel test robot wrote:

Hi Lad,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on renesas-devel/next]
[also build test WARNING on v5.14-rc2 next-20210723]
[cannot apply to mkl-can-next/testing robh/for-next]
[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]

url:    https://github.com/0day-ci/linux/commits/Lad-Prabhakar/Renesas-RZ-G2L-CANFD-support/20210722-035332
base:   https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
config: arm64-randconfig-r031-20210723 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9625ca5b602616b2f5584e8a49ba93c52c141e40)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/082d605e73c5922419a736aa9ecd3a76c0241bf7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Lad-Prabhakar/Renesas-RZ-G2L-CANFD-support/20210722-035332
        git checkout 082d605e73c5922419a736aa9ecd3a76c0241bf7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

quoted

quoted

drivers/net/can/rcar/rcar_canfd.c:1699:12: warning: cast to smaller integer type 'enum rcanfd_chip_id' from 'const void *' [-Wvoid-pointer-to-enum-cast]

           chip_id = (enum rcanfd_chip_id)of_device_get_match_data(&pdev->dev);
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.

Seems we need the cast (uintptr_t), that I asked you to remove. Can you
test if

| chip_id = (enum rcanfd_chip_id)(uintptr_t)of_device_get_match_data(&pdev->dev);

works?

Marc

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