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* [radeon-alex:amd-staging-drm-next 9938/9999] drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:5212:45: warning: unused variable 'gfx_v7_0_ip_block'
@ 2020-06-24  9:26 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2020-06-24  9:26 UTC (permalink / raw)
  To: Nirmoy Das; +Cc: Alex Deucher, clang-built-linux, kbuild-all, dri-devel

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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	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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2020-06-24  9:26 [radeon-alex:amd-staging-drm-next 9938/9999] drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c:5212:45: warning: unused variable 'gfx_v7_0_ip_block' kernel test robot

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