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Thu, 21 Apr 2022 19:45:35 +0000 Date: Fri, 22 Apr 2022 03:44:40 +0800 From: kernel test robot To: Fabio Estevam Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Wolfram Sang Subject: drivers/i2c/busses/i2c-mxs.c:802:18: warning: cast to smaller integer type 'enum mxs_i2c_devtype' from 'const void *' Message-ID: <202204220355.TdCb2zsz-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Fabio, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b253435746d9a4a701b5f09211b9c14d3370d0da commit: c32abd8b569144b20c9c9b6dd7232828c612452f i2c: mxs: Remove unneeded platform_device_id date: 1 year, 5 months ago config: arm64-randconfig-r034-20220421 (https://download.01.org/0day-ci/archive/20220422/202204220355.TdCb2zsz-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280) 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=c32abd8b569144b20c9c9b6dd7232828c612452f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c32abd8b569144b20c9c9b6dd7232828c612452f # 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/i2c/busses/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/i2c/busses/i2c-mxs.c:802:18: warning: cast to smaller integer type 'enum mxs_i2c_devtype' from 'const void *' [-Wvoid-pointer-to-enum-cast] i2c->dev_type = (enum mxs_i2c_devtype)of_device_get_match_data(&pdev->dev); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +802 drivers/i2c/busses/i2c-mxs.c 790 791 static int mxs_i2c_probe(struct platform_device *pdev) 792 { 793 struct device *dev = &pdev->dev; 794 struct mxs_i2c_dev *i2c; 795 struct i2c_adapter *adap; 796 int err, irq; 797 798 i2c = devm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL); 799 if (!i2c) 800 return -ENOMEM; 801 > 802 i2c->dev_type = (enum mxs_i2c_devtype)of_device_get_match_data(&pdev->dev); 803 804 i2c->regs = devm_platform_ioremap_resource(pdev, 0); 805 if (IS_ERR(i2c->regs)) 806 return PTR_ERR(i2c->regs); 807 808 irq = platform_get_irq(pdev, 0); 809 if (irq < 0) 810 return irq; 811 812 err = devm_request_irq(dev, irq, mxs_i2c_isr, 0, dev_name(dev), i2c); 813 if (err) 814 return err; 815 816 i2c->dev = dev; 817 818 init_completion(&i2c->cmd_complete); 819 820 if (dev->of_node) { 821 err = mxs_i2c_get_ofdata(i2c); 822 if (err) 823 return err; 824 } 825 826 /* Setup the DMA */ 827 i2c->dmach = dma_request_chan(dev, "rx-tx"); 828 if (IS_ERR(i2c->dmach)) { 829 dev_err(dev, "Failed to request dma\n"); 830 return PTR_ERR(i2c->dmach); 831 } 832 833 platform_set_drvdata(pdev, i2c); 834 835 /* Do reset to enforce correct startup after pinmuxing */ 836 err = mxs_i2c_reset(i2c); 837 if (err) 838 return err; 839 840 adap = &i2c->adapter; 841 strlcpy(adap->name, "MXS I2C adapter", sizeof(adap->name)); 842 adap->owner = THIS_MODULE; 843 adap->algo = &mxs_i2c_algo; 844 adap->quirks = &mxs_i2c_quirks; 845 adap->dev.parent = dev; 846 adap->nr = pdev->id; 847 adap->dev.of_node = pdev->dev.of_node; 848 i2c_set_adapdata(adap, i2c); 849 err = i2c_add_numbered_adapter(adap); 850 if (err) { 851 writel(MXS_I2C_CTRL0_SFTRST, 852 i2c->regs + MXS_I2C_CTRL0_SET); 853 return err; 854 } 855 856 return 0; 857 } 858 -- 0-DAY CI Kernel Test Service https://01.org/lkp