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Thu, 16 Jun 2022 10:50:56 +0000 Date: Thu, 16 Jun 2022 18:50:23 +0800 From: kernel test robot To: Jiri Pirko Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [jpirko-mlxsw:jiri_devel_lc_dev 2/15] drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:94:3: error: void function 'mlxsw_linecard_bdev_del' should not return a value Message-ID: <202206161832.71XjiKsD-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://github.com/jpirko/linux_mlxsw jiri_devel_lc_dev head: b3fdf991f2ce5b1a4e7f527fcfc27c9d413ae566 commit: 1a2503c635b5bd91f6eb2d2520960d609df0e6ee [2/15] mlxsw: core_linecards: Introduce per line card auxiliary device config: riscv-randconfig-r042-20220616 (https://download.01.org/0day-ci/archive/20220616/202206161832.71XjiKsD-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project f0e608de27b3d568000046eebf3712ab542979d6) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/jpirko/linux_mlxsw/commit/1a2503c635b5bd91f6eb2d2520960d609df0e6ee git remote add jpirko-mlxsw https://github.com/jpirko/linux_mlxsw git fetch --no-tags jpirko-mlxsw jiri_devel_lc_dev git checkout 1a2503c635b5bd91f6eb2d2520960d609df0e6ee # 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=riscv SHELL=/bin/bash drivers/net/ethernet/mellanox/mlxsw/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:13: In file included from include/net/devlink.h:14: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:40: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:464:31: 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:477:61: 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/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:13: In file included from include/net/devlink.h:14: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:40: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:490:61: 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/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:13: In file included from include/net/devlink.h:14: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:40: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:501:33: 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:511:59: 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:521:59: 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); ~~~~~~~~~~ ^ include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; ~~~~~~~~~~ ^ >> drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:94:3: error: void function 'mlxsw_linecard_bdev_del' should not return a value [-Wreturn-type] return NULL; ^ ~~~~ 7 warnings and 1 error generated. vim +/mlxsw_linecard_bdev_del +94 drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c 88 89 void mlxsw_linecard_bdev_del(struct mlxsw_linecard *linecard) 90 { 91 struct mlxsw_linecard_bdev *linecard_bdev = linecard->bdev; 92 93 if (!linecard_bdev) > 94 return NULL; 95 auxiliary_device_delete(&linecard_bdev->adev); 96 auxiliary_device_uninit(&linecard_bdev->adev); 97 linecard->bdev = NULL; 98 } 99 -- 0-DAY CI Kernel Test Service https://01.org/lkp