Hi Rob, I love your patch! Perhaps something to improve: [auto build test WARNING on drm/drm-next] [also build test WARNING on drm-intel/for-linux-next drm-tip/drm-tip v5.19-rc1 next-20220607] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Rob-Clark/drm-Add-DRM_GEM_FOPS/20220607-035529 base: git://anongit.freedesktop.org/drm/drm drm-next config: s390-buildonly-randconfig-r008-20220605 (https://download.01.org/0day-ci/archive/20220607/202206071325.FWDwmg2D-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b92436efcb7813fc481b30f2593a4907568d917a) 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-s390x-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/09342d3c56fa77dacb235908515f0a44ac2fc9c2 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Rob-Clark/drm-Add-DRM_GEM_FOPS/20220607-035529 git checkout 09342d3c56fa77dacb235908515f0a44ac2fc9c2 # 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=s390 SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/ drivers/gpu/drm/msm/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/msm/msm_gpu.c:9: In file included from drivers/gpu/drm/msm/msm_gpu.h:10: In file included from include/linux/adreno-smmu-priv.h:9: In file included from include/linux/io-pgtable.h:6: In file included from include/linux/iommu.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: 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/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from drivers/gpu/drm/msm/msm_gpu.c:9: In file included from drivers/gpu/drm/msm/msm_gpu.h:10: In file included from include/linux/adreno-smmu-priv.h:9: In file included from include/linux/io-pgtable.h:6: In file included from include/linux/iommu.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: 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/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from drivers/gpu/drm/msm/msm_gpu.c:9: In file included from drivers/gpu/drm/msm/msm_gpu.h:10: In file included from include/linux/adreno-smmu-priv.h:9: In file included from include/linux/io-pgtable.h:6: In file included from include/linux/iommu.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: 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:609:20: 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:617:20: 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:625:20: 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:634:21: 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:643:21: 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:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> drivers/gpu/drm/msm/msm_gpu.c:158:46: warning: format specifies type 'unsigned long' but the argument has type 'uint32_t' (aka 'unsigned int') [-Wformat] drm_printf(p, "drm-maxfreq-gpu:\t%lu Hz\n", gpu->fast_rate); ~~~ ^~~~~~~~~~~~~~ %u In file included from drivers/gpu/drm/msm/msm_gpu.c:7: In file included from include/drm/drm_drv.h:33: In file included from include/drm/drm_device.h:5: In file included from include/linux/kref.h:16: In file included from include/linux/spinlock.h:93: arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */ ^ arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE' ALTINSTR_REPLACEMENT(altinstr, 1) \ ^ arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT' INSTR_LEN_SANITY_CHECK(altinstr_len(num)) ^ arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK' ".if " len " > 254\n" \ ^ <inline asm>:5:5: note: instantiated into assembly here .if 6651b-6641b > 254 ^ In file included from drivers/gpu/drm/msm/msm_gpu.c:7: In file included from include/drm/drm_drv.h:33: In file included from include/drm/drm_device.h:5: In file included from include/linux/kref.h:16: In file included from include/linux/spinlock.h:93: arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives does not support instructions blocks > 254 bytes ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */ ^ arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE' ALTINSTR_REPLACEMENT(altinstr, 1) \ ^ arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT' INSTR_LEN_SANITY_CHECK(altinstr_len(num)) ^ arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK' "\t.error \"cpu alternatives does not support instructions " \ ^ <inline asm>:6:2: note: instantiated into assembly here .error "cpu alternatives does not support instructions blocks > 254 bytes" ^ In file included from drivers/gpu/drm/msm/msm_gpu.c:7: In file included from include/drm/drm_drv.h:33: In file included from include/drm/drm_device.h:5: In file included from include/linux/kref.h:16: In file included from include/linux/spinlock.h:93: arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */ ^ arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE' ALTINSTR_REPLACEMENT(altinstr, 1) \ ^ arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT' INSTR_LEN_SANITY_CHECK(altinstr_len(num)) ^ arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK' ".if (" len ") %% 2\n" \ ^ <inline asm>:8:5: note: instantiated into assembly here .if (6651b-6641b) % 2 ^ In file included from drivers/gpu/drm/msm/msm_gpu.c:7: In file included from include/drm/drm_drv.h:33: In file included from include/drm/drm_device.h:5: In file included from include/linux/kref.h:16: In file included from include/linux/spinlock.h:93: arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives instructions length is odd ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */ ^ arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE' ALTINSTR_REPLACEMENT(altinstr, 1) \ ^ arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT' INSTR_LEN_SANITY_CHECK(altinstr_len(num)) ^ arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK' "\t.error \"cpu alternatives instructions length is odd\"\n" \ ^ <inline asm>:9:2: note: instantiated into assembly here .error "cpu alternatives instructions length is odd" ^ In file included from drivers/gpu/drm/msm/msm_gpu.c:7: In file included from include/drm/drm_drv.h:33: In file included from include/drm/drm_device.h:5: In file included from include/linux/kref.h:16: In file included from include/linux/spinlock.h:93: arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */ ^ arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE' OLDINSTR(oldinstr, 1) \ ^ arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR' OLDINSTR_PADDING(oldinstr, num) \ ^ arch/s390/include/asm/alternative.h:71:3: note: expanded from macro 'OLDINSTR_PADDING' ".if " oldinstr_pad_len(num) " > 6\n" \ ^ vim +158 drivers/gpu/drm/msm/msm_gpu.c 150 151 void msm_gpu_show_fdinfo(struct msm_gpu *gpu, struct msm_file_private *ctx, 152 struct drm_printer *p) 153 { 154 drm_printf(p, "drm-driver:\t%s\n", gpu->dev->driver->name); 155 drm_printf(p, "drm-client-id:\t%u\n", ctx->seqno); 156 drm_printf(p, "drm-engine-gpu:\t%llu ns\n", ctx->elapsed_ns); 157 drm_printf(p, "drm-cycles-gpu:\t%llu\n", ctx->cycles); > 158 drm_printf(p, "drm-maxfreq-gpu:\t%lu Hz\n", gpu->fast_rate); 159 } 160 -- 0-DAY CI Kernel Test Service https://01.org/lkp
