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Sat, 14 Oct 2023 19:25:26 +0000 Date: Sun, 15 Oct 2023 03:24:45 +0800 From: kernel test robot To: Sergio Paracuellos Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Thomas Bogendoerfer Subject: drivers/clk/ralink/clk-mtmips.c:821:34: warning: unused variable 'mtmips_of_match' Message-ID: <202310150352.KyKovpbT-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 tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 70f8c6f8f8800d970b10676cceae42bba51a4899 commit: 6f3b15586eef736831abe6a14f2a6906bc0dc074 clk: ralink: add clock and reset driver for MTMIPS SoCs date: 4 months ago config: hexagon-randconfig-r016-20230817 (https://download.01.org/0day-ci/archive/20231015/202310150352.KyKovpbT-lkp@intel.com/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231015/202310150352.KyKovpbT-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202310150352.KyKovpbT-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/clk/ralink/clk-mtmips.c:11: In file included from include/linux/regmap.h:20: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from drivers/clk/ralink/clk-mtmips.c:11: In file included from include/linux/regmap.h:20: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from drivers/clk/ralink/clk-mtmips.c:11: In file included from include/linux/regmap.h:20: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ drivers/clk/ralink/clk-mtmips.c:309:9: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] return ret; ^~~ drivers/clk/ralink/clk-mtmips.c:285:9: note: initialize the variable 'ret' to silence this warning int ret, i; ^ = 0 drivers/clk/ralink/clk-mtmips.c:359:9: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] return ret; ^~~ drivers/clk/ralink/clk-mtmips.c:335:9: note: initialize the variable 'ret' to silence this warning int ret, i; ^ = 0 >> drivers/clk/ralink/clk-mtmips.c:821:34: warning: unused variable 'mtmips_of_match' [-Wunused-const-variable] static const struct of_device_id mtmips_of_match[] = { ^ 9 warnings generated. vim +/mtmips_of_match +821 drivers/clk/ralink/clk-mtmips.c 820 > 821 static const struct of_device_id mtmips_of_match[] = { 822 { 823 .compatible = "ralink,rt2880-sysc", 824 .data = &rt2880_clk_data, 825 }, 826 { 827 .compatible = "ralink,rt3050-sysc", 828 .data = &rt305x_clk_data, 829 }, 830 { 831 .compatible = "ralink,rt3052-sysc", 832 .data = &rt305x_clk_data, 833 }, 834 { 835 .compatible = "ralink,rt3352-sysc", 836 .data = &rt3352_clk_data, 837 }, 838 { 839 .compatible = "ralink,rt3883-sysc", 840 .data = &rt3883_clk_data, 841 }, 842 { 843 .compatible = "ralink,rt5350-sysc", 844 .data = &rt5350_clk_data, 845 }, 846 { 847 .compatible = "ralink,mt7620-sysc", 848 .data = &mt7620_clk_data, 849 }, 850 { 851 .compatible = "ralink,mt7628-sysc", 852 .data = &mt76x8_clk_data, 853 }, 854 { 855 .compatible = "ralink,mt7688-sysc", 856 .data = &mt76x8_clk_data, 857 }, 858 {} 859 }; 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