Messages in this thread | | | Date | Wed, 25 May 2022 17:38:45 -0700 | From | Nathan Chancellor <> | Subject | Re: drivers/dma/imx-dma.c:1048:20: warning: cast to smaller integer type 'enum imx_dma_type' from 'const void *' |
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On Wed, May 25, 2022 at 09:14:30PM -0300, Fabio Estevam wrote: > On Sun, May 1, 2022 at 11:13 PM kernel test robot <lkp@intel.com> wrote: > > > > Hi Fabio, > > > > FYI, the error/warning still remains. > > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > head: 672c0c5173427e6b3e2a9bbb7be51ceeec78093a > > commit: 0ab785c894e618587e83bb67e8a8e96649868ad1 dmaengine: imx-dma: Remove unused .id_table > > date: 1 year, 5 months ago > > config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220502/202205021042.xPjJ6Z4J-lkp@intel.com/config) > > compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 09325d36061e42b495d1f4c7e933e260eac260ed) > > 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ab785c894e618587e83bb67e8a8e96649868ad1 > > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > git fetch --no-tags linus master > > git checkout 0ab785c894e618587e83bb67e8a8e96649868ad1 > > # save the config file > > mkdir build_dir && cp config build_dir/.config > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/dma/ > > > > 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/imx-dma.c:1048:20: warning: cast to smaller integer type 'enum imx_dma_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] > > imxdma->devtype = (enum imx_dma_type)of_device_get_match_data(&pdev->dev); > > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > 1 warning generated. > > Does anyone know how to fix this clang warning?
Either an intermediate cast to uintptr_t or unsigned long or replacing the enum cast with one of those should work. See commits:
2602dc10f9d9 ("memory: renesas-rpc-if: Silence clang warning") 10462b3558d4 ("can: mcp251x: mcp251x_can_probe(): silence clang warning") 83415669d8d8 ("can: hi311x: hi3110_can_probe(): silence clang warning") be5aeee30e45 ("scsi: fcoe: Suppress a compiler warning")
Cheers, Nathan
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