tree: git://people.freedesktop.org/~agd5f/linux.git amd-staging-drm-next head: 2fecc2a42eb2ca00277fe34dafcf9ece398a848e commit: 6ae6ed5e729fdf73a83232b7e07750e35f07eada [9938/9999] drm/amdgpu: label internally used symbols as static config: s390-randconfig-r014-20200624 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 1d4c87335d5236ea1f35937e1014980ba961ae34) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390-linux-gnu git checkout 6ae6ed5e729fdf73a83232b7e07750e35f07eada # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390
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 >>):
In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33: In file included from include/drm/drm_crtc.h:31: In file included from include/linux/fb.h:17: In file included from arch/s390/include/asm/io.h:72: include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ include/uapi/linux/swab.h:20:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ ^ In file included from drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:27: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:69: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33: In file included from include/drm/drm_crtc.h:31: In file included from include/linux/fb.h:17: In file included from arch/s390/include/asm/io.h:72: include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ include/uapi/linux/swab.h:21:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ ^ In file included from drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:27: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:69: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33: In file included from include/drm/drm_crtc.h:31: In file included from include/linux/fb.h:17: In file included from arch/s390/include/asm/io.h:72: include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ include/uapi/linux/swab.h:22:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0xff000000UL) >> 24))) ^ In file included from drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:27: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:69: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33: In file included from include/drm/drm_crtc.h:31: In file included from include/linux/fb.h:17: In file included from arch/s390/include/asm/io.h:72: include/asm-generic/io.h:492:45: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:120:12: note: expanded from macro '__swab32' __fswab32(x)) ^ In file included from drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:27: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:69: In file included from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:33: In file included from include/drm/drm_crtc.h:31: In file included from include/linux/fb.h:17: In file included from arch/s390/include/asm/io.h:72: include/asm-generic/io.h:503:33: 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:513:46: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew(cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:523:46: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel(cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:585:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:593:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:601:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:610:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:619:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:628:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^
drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:5212:45: warning: unused variable 'gfx_v7_0_ip_block' [-Wunused-const-variable]
static const struct amdgpu_ip_block_version gfx_v7_0_ip_block = ^ 21 warnings generated.
vim +/gfx_v7_0_ip_block +5212 drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
5211
5212 static const struct amdgpu_ip_block_version gfx_v7_0_ip_block =
5213 { 5214 .type = AMD_IP_BLOCK_TYPE_GFX, 5215 .major = 7, 5216 .minor = 0, 5217 .rev = 0, 5218 .funcs = &gfx_v7_0_ip_funcs, 5219 }; 5220
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