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d="scan'208";a="376722723" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2023 04:35:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10827"; a="866390996" X-IronPort-AV: E=Sophos;i="6.02,239,1688454000"; d="scan'208";a="866390996" Received: from lkp-server01.sh.intel.com (HELO 59b3c6e06877) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 09 Sep 2023 04:35:15 -0700 Received: from kbuild by 59b3c6e06877 with local (Exim 4.96) (envelope-from ) id 1qewF7-0003Q6-0q; Sat, 09 Sep 2023 11:35:13 +0000 Date: Sat, 9 Sep 2023 19:34:35 +0800 From: kernel test robot To: Ben Skeggs Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [skeggsb-nouveau:00.02-gsp-rm 80/88] drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c:65:1: error: non-void function does not return a value in all control paths Message-ID: <202309091917.lLDZlknC-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://gitlab.freedesktop.org/skeggsb/nouveau 00.02-gsp-rm head: dcd62291d3f1ba328303b1617495fa4542117fc1 commit: fd76a81787aec016955dcd36f13da3943510b0d1 [80/88] WIPdrm/nouveau/disp/r535: initial support config: s390-randconfig-r031-20230909 (https://download.01.org/0day-ci/archive/20230909/202309091917.lLDZlknC-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230909/202309091917.lLDZlknC-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/202309091917.lLDZlknC-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c:22: In file included from drivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/engine/disp.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/engine.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h:4: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/device.h:4: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/oclass.h:3: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/os.h:4: In file included from drivers/gpu/drm/nouveau/include/nvif/os.h:8: In file included from include/linux/pci.h:39: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | 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] 560 | 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' 37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) | ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' 102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) | ^ In file included from drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c:22: In file included from drivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/engine/disp.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/engine.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h:4: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/device.h:4: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/oclass.h:3: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/os.h:4: In file included from drivers/gpu/drm/nouveau/include/nvif/os.h:8: In file included from include/linux/pci.h:39: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | 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' 35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) | ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ In file included from drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c:22: In file included from drivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/engine/disp.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/engine.h:5: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h:4: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/device.h:4: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/oclass.h:3: In file included from drivers/gpu/drm/nouveau/include/nvkm/core/os.h:4: In file included from drivers/gpu/drm/nouveau/include/nvif/os.h:8: In file included from include/linux/pci.h:39: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __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] 594 | __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] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 692 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 700 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 708 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 717 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 726 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 735 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ >> drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c:65:1: error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type] 65 | } | ^ drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c:1139:21: warning: variable 'type' set but not used [-Wunused-but-set-variable] 1139 | enum nvkm_ior_type type; | ^ 13 warnings and 1 error generated. vim +65 drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c 52 53 static u64 54 r535_chan_user(struct nvkm_disp_chan *chan, u64 *psize) 55 { 56 switch (chan->object.oclass & 0xff) { 57 case 0x7d: *psize = 0x10000; return 0x680000; 58 case 0x7e: *psize = 0x01000; return 0x690000 + (chan->head * *psize); 59 case 0x7b: *psize = 0x01000; return 0x6b0000 + (chan->head * *psize); 60 case 0x7a: *psize = 0x01000; return 0x6d8000 + (chan->head * *psize); 61 default: 62 BUG_ON(1); 63 break; 64 } > 65 } 66 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki