From: kernel test robot <lkp@intel.com>
To: Ben Skeggs <bskeggs@redhat.com>
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
Date: Sat, 9 Sep 2023 19:34:35 +0800 [thread overview]
Message-ID: <202309091917.lLDZlknC-lkp@intel.com> (raw)
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 <lkp@intel.com>
| 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
reply other threads:[~2023-09-09 11:35 UTC|newest]
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