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* drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops'
@ 2021-08-21 18:41 kernel test robot
  0 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2021-08-21 18:41 UTC (permalink / raw)
  To: Alex Deucher; +Cc: clang-built-linux, kbuild-all, linux-kernel, Dave Airlie

[-- Attachment #1: Type: text/plain, Size: 2894 bytes --]

Hi Dave,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   002c0aef109067168ae68ee69b5ce67edc2e63c1
commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
date:   12 months ago
config: arm64-randconfig-r036-20210821 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 9e9d70591e72fc6762b4b9a226b68ed1307419bf)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c8d22fcae2f9590a07b000e1724f665820b77f7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

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 >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops' [-Wunused-const-variable]
   static const struct file_operations amdgpu_rap_debugfs_ops = {
                                       ^
   1 warning generated.
--
>> drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_pm.c:41:34: warning: unused variable 'clocks' [-Wunused-const-variable]
   static const struct cg_flag_name clocks[] = {
                                    ^
   1 warning generated.


vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c

a4322e1881bed80 Wenhui Sheng 2020-08-11  108  
a4322e1881bed80 Wenhui Sheng 2020-08-11 @109  static const struct file_operations amdgpu_rap_debugfs_ops = {
a4322e1881bed80 Wenhui Sheng 2020-08-11  110  	.owner = THIS_MODULE,
a4322e1881bed80 Wenhui Sheng 2020-08-11  111  	.read = NULL,
a4322e1881bed80 Wenhui Sheng 2020-08-11  112  	.write = amdgpu_rap_debugfs_write,
a4322e1881bed80 Wenhui Sheng 2020-08-11  113  	.llseek = default_llseek
a4322e1881bed80 Wenhui Sheng 2020-08-11  114  };
a4322e1881bed80 Wenhui Sheng 2020-08-11  115  

:::::: The code at line 109 was first introduced by commit
:::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test

:::::: TO: Wenhui Sheng <Wenhui.Sheng@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 40397 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread

* drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops'
@ 2021-06-27 11:43 kernel test robot
  0 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2021-06-27 11:43 UTC (permalink / raw)
  To: Alex Deucher; +Cc: kbuild-all, clang-built-linux, linux-kernel, Dave Airlie

[-- Attachment #1: Type: text/plain, Size: 17183 bytes --]

Hi Dave,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   625acffd7ae2c52898d249e6c5c39f348db0d8df
commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
date:   10 months ago
config: s390-buildonly-randconfig-r001-20210627 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 59558129276098d62046c8cda92240d292cbfb1c)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c8d22fcae2f9590a07b000e1724f665820b77f7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7
        # 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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops' [-Wunused-const-variable]
   static const struct file_operations amdgpu_rap_debugfs_ops = {
                                       ^
   21 warnings generated.
--
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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/amd/amdgpu/../pm/amdgpu_pm.c:41:34: warning: unused variable 'clocks' [-Wunused-const-variable]
   static const struct cg_flag_name clocks[] = {
                                    ^
   21 warnings generated.


vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c

a4322e1881bed8 Wenhui Sheng 2020-08-11  108  
a4322e1881bed8 Wenhui Sheng 2020-08-11 @109  static const struct file_operations amdgpu_rap_debugfs_ops = {
a4322e1881bed8 Wenhui Sheng 2020-08-11  110  	.owner = THIS_MODULE,
a4322e1881bed8 Wenhui Sheng 2020-08-11  111  	.read = NULL,
a4322e1881bed8 Wenhui Sheng 2020-08-11  112  	.write = amdgpu_rap_debugfs_write,
a4322e1881bed8 Wenhui Sheng 2020-08-11  113  	.llseek = default_llseek
a4322e1881bed8 Wenhui Sheng 2020-08-11  114  };
a4322e1881bed8 Wenhui Sheng 2020-08-11  115  

:::::: The code at line 109 was first introduced by commit
:::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test

:::::: TO: Wenhui Sheng <Wenhui.Sheng@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 27684 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread

* drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops'
@ 2021-06-13  5:14 kernel test robot
  0 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2021-06-13  5:14 UTC (permalink / raw)
  To: Alex Deucher; +Cc: kbuild-all, clang-built-linux, linux-kernel, Dave Airlie

[-- Attachment #1: Type: text/plain, Size: 4739 bytes --]

Hi Dave,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   8ecfa36cd4db3275bf3b6c6f32c7e3c6bb537de2
commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
date:   9 months ago
config: powerpc64-randconfig-r025-20210613 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386)
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 powerpc64 cross compiling tool for clang build
        # apt-get install binutils-powerpc64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c8d22fcae2f9590a07b000e1724f665820b77f7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 

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_rap.c:24:
   In file included from include/linux/debugfs.h:15:
   In file included from include/linux/fs.h:6:
   In file included from include/linux/wait_bit.h:8:
   In file included from include/linux/wait.h:7:
   In file included from include/linux/list.h:9:
   In file included from include/linux/kernel.h:12:
   In file included from include/linux/bitops.h:29:
   In file included from arch/powerpc/include/asm/bitops.h:62:
   arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined]
   #define __lwsync()      __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
           ^
   <built-in>:309:9: note: previous definition is here
   #define __lwsync __builtin_ppc_lwsync
           ^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops' [-Wunused-const-variable]
   static const struct file_operations amdgpu_rap_debugfs_ops = {
                                       ^
   2 warnings generated.
--
   In file included from drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_pm.c:26:
   In file included from include/drm/drm_debugfs.h:36:
   In file included from include/linux/seq_file.h:7:
   In file included from include/linux/bug.h:5:
   In file included from arch/powerpc/include/asm/bug.h:109:
   In file included from include/asm-generic/bug.h:20:
   In file included from include/linux/kernel.h:12:
   In file included from include/linux/bitops.h:29:
   In file included from arch/powerpc/include/asm/bitops.h:62:
   arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined]
   #define __lwsync()      __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
           ^
   <built-in>:309:9: note: previous definition is here
   #define __lwsync __builtin_ppc_lwsync
           ^
>> drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_pm.c:41:34: warning: unused variable 'clocks' [-Wunused-const-variable]
   static const struct cg_flag_name clocks[] = {
                                    ^
   2 warnings generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for HOTPLUG_PCI_POWERNV
   Depends on PCI && HOTPLUG_PCI && PPC_POWERNV && EEH
   Selected by
   - OCXL && PPC_POWERNV && PCI && EEH


vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c

a4322e1881bed8 Wenhui Sheng 2020-08-11  108  
a4322e1881bed8 Wenhui Sheng 2020-08-11 @109  static const struct file_operations amdgpu_rap_debugfs_ops = {
a4322e1881bed8 Wenhui Sheng 2020-08-11  110  	.owner = THIS_MODULE,
a4322e1881bed8 Wenhui Sheng 2020-08-11  111  	.read = NULL,
a4322e1881bed8 Wenhui Sheng 2020-08-11  112  	.write = amdgpu_rap_debugfs_write,
a4322e1881bed8 Wenhui Sheng 2020-08-11  113  	.llseek = default_llseek
a4322e1881bed8 Wenhui Sheng 2020-08-11  114  };
a4322e1881bed8 Wenhui Sheng 2020-08-11  115  

:::::: The code at line 109 was first introduced by commit
:::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test

:::::: TO: Wenhui Sheng <Wenhui.Sheng@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 26884 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread

* drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops'
@ 2021-05-10 17:33 kernel test robot
  0 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2021-05-10 17:33 UTC (permalink / raw)
  To: Alex Deucher; +Cc: kbuild-all, clang-built-linux, linux-kernel, Dave Airlie

[-- Attachment #1: Type: text/plain, Size: 2889 bytes --]

Hi Dave,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6efb943b8616ec53a5e444193dccf1af9ad627b5
commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
date:   8 months ago
config: arm64-randconfig-r014-20210510 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 492173d42b32cb91d5d0d72d5ed84fcab80d059a)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c8d22fcae2f9590a07b000e1724f665820b77f7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 

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 >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops' [-Wunused-const-variable]
   static const struct file_operations amdgpu_rap_debugfs_ops = {
                                       ^
   1 warning generated.
--
>> drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_pm.c:41:34: warning: unused variable 'clocks' [-Wunused-const-variable]
   static const struct cg_flag_name clocks[] = {
                                    ^
   1 warning generated.


vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c

a4322e1881bed8 Wenhui Sheng 2020-08-11  108  
a4322e1881bed8 Wenhui Sheng 2020-08-11 @109  static const struct file_operations amdgpu_rap_debugfs_ops = {
a4322e1881bed8 Wenhui Sheng 2020-08-11  110  	.owner = THIS_MODULE,
a4322e1881bed8 Wenhui Sheng 2020-08-11  111  	.read = NULL,
a4322e1881bed8 Wenhui Sheng 2020-08-11  112  	.write = amdgpu_rap_debugfs_write,
a4322e1881bed8 Wenhui Sheng 2020-08-11  113  	.llseek = default_llseek
a4322e1881bed8 Wenhui Sheng 2020-08-11  114  };
a4322e1881bed8 Wenhui Sheng 2020-08-11  115  

:::::: The code at line 109 was first introduced by commit
:::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test

:::::: TO: Wenhui Sheng <Wenhui.Sheng@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 41097 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread

* drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops'
@ 2021-04-09 12:45 kernel test robot
  0 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2021-04-09 12:45 UTC (permalink / raw)
  To: Alex Deucher; +Cc: kbuild-all, clang-built-linux, linux-kernel, Dave Airlie

[-- Attachment #1: Type: text/plain, Size: 2885 bytes --]

Hi Dave,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   17e7124aad766b3f158943acb51467f86220afe9
commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
date:   7 months ago
config: arm64-randconfig-r035-20210409 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project dd453a1389b6a7e6d9214b449d3c54981b1a89b6)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c8d22fcae2f9590a07b000e1724f665820b77f7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

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 >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops' [-Wunused-const-variable]
   static const struct file_operations amdgpu_rap_debugfs_ops = {
                                       ^
   1 warning generated.
--
>> drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_pm.c:41:34: warning: unused variable 'clocks' [-Wunused-const-variable]
   static const struct cg_flag_name clocks[] = {
                                    ^
   1 warning generated.


vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c

a4322e1881bed8 Wenhui Sheng 2020-08-11  108  
a4322e1881bed8 Wenhui Sheng 2020-08-11 @109  static const struct file_operations amdgpu_rap_debugfs_ops = {
a4322e1881bed8 Wenhui Sheng 2020-08-11  110  	.owner = THIS_MODULE,
a4322e1881bed8 Wenhui Sheng 2020-08-11  111  	.read = NULL,
a4322e1881bed8 Wenhui Sheng 2020-08-11  112  	.write = amdgpu_rap_debugfs_write,
a4322e1881bed8 Wenhui Sheng 2020-08-11  113  	.llseek = default_llseek
a4322e1881bed8 Wenhui Sheng 2020-08-11  114  };
a4322e1881bed8 Wenhui Sheng 2020-08-11  115  

:::::: The code at line 109 was first introduced by commit
:::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test

:::::: TO: Wenhui Sheng <Wenhui.Sheng@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 31484 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread

* drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops'
@ 2021-03-15  4:39 kernel test robot
  0 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2021-03-15  4:39 UTC (permalink / raw)
  To: Alex Deucher; +Cc: kbuild-all, clang-built-linux, linux-kernel, Dave Airlie

[-- Attachment #1: Type: text/plain, Size: 17172 bytes --]

Hi Dave,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1e28eed17697bcf343c6743f0028cc3b5dd88bf0
commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
date:   6 months ago
config: s390-randconfig-r011-20210315 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a28facba1ccdc957f386b7753f4958307f1bfde8)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c8d22fcae2f9590a07b000e1724f665820b77f7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7
        # 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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops' [-Wunused-const-variable]
   static const struct file_operations amdgpu_rap_debugfs_ops = {
                                       ^
   21 warnings generated.
--
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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/amd/amdgpu/../pm/amdgpu_pm.c:41:34: warning: unused variable 'clocks' [-Wunused-const-variable]
   static const struct cg_flag_name clocks[] = {
                                    ^
   21 warnings generated.


vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c

a4322e1881bed8 Wenhui Sheng 2020-08-11  108  
a4322e1881bed8 Wenhui Sheng 2020-08-11 @109  static const struct file_operations amdgpu_rap_debugfs_ops = {
a4322e1881bed8 Wenhui Sheng 2020-08-11  110  	.owner = THIS_MODULE,
a4322e1881bed8 Wenhui Sheng 2020-08-11  111  	.read = NULL,
a4322e1881bed8 Wenhui Sheng 2020-08-11  112  	.write = amdgpu_rap_debugfs_write,
a4322e1881bed8 Wenhui Sheng 2020-08-11  113  	.llseek = default_llseek
a4322e1881bed8 Wenhui Sheng 2020-08-11  114  };
a4322e1881bed8 Wenhui Sheng 2020-08-11  115  

:::::: The code at line 109 was first introduced by commit
:::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test

:::::: TO: Wenhui Sheng <Wenhui.Sheng@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 33490 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread

* drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops'
@ 2021-01-25  4:43 kernel test robot
  0 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2021-01-25  4:43 UTC (permalink / raw)
  To: Alex Deucher; +Cc: kbuild-all, clang-built-linux, linux-kernel, Dave Airlie

[-- Attachment #1: Type: text/plain, Size: 17139 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6ee1d745b7c9fd573fba142a2efdad76a9f1cb04
commit: 0c8d22fcae2f9590a07b000e1724f665820b77f7 Merge tag 'amd-drm-next-5.10-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-next
date:   5 months ago
config: s390-randconfig-r011-20210125 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 12d0753aca22896fda2cf76781b0ee0524d55065)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c8d22fcae2f9590a07b000e1724f665820b77f7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0c8d22fcae2f9590a07b000e1724f665820b77f7
        # 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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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: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/amdgpu_rap.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: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/amd/amdgpu/amdgpu_rap.c:109:37: warning: unused variable 'amdgpu_rap_debugfs_ops' [-Wunused-const-variable]
   static const struct file_operations amdgpu_rap_debugfs_ops = {
                                       ^
   21 warnings generated.
--
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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: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/../pm/amdgpu_pm.c:28:
   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: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/amd/amdgpu/../pm/amdgpu_pm.c:41:34: warning: unused variable 'clocks' [-Wunused-const-variable]
   static const struct cg_flag_name clocks[] = {
                                    ^
   21 warnings generated.


vim +/amdgpu_rap_debugfs_ops +109 drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c

a4322e1881bed80d Wenhui Sheng 2020-08-11  108  
a4322e1881bed80d Wenhui Sheng 2020-08-11 @109  static const struct file_operations amdgpu_rap_debugfs_ops = {
a4322e1881bed80d Wenhui Sheng 2020-08-11  110  	.owner = THIS_MODULE,
a4322e1881bed80d Wenhui Sheng 2020-08-11  111  	.read = NULL,
a4322e1881bed80d Wenhui Sheng 2020-08-11  112  	.write = amdgpu_rap_debugfs_write,
a4322e1881bed80d Wenhui Sheng 2020-08-11  113  	.llseek = default_llseek
a4322e1881bed80d Wenhui Sheng 2020-08-11  114  };
a4322e1881bed80d Wenhui Sheng 2020-08-11  115  

:::::: The code at line 109 was first introduced by commit
:::::: a4322e1881bed80ddb904482f0b2e948fa7fd47e drm/amdgpu: add debugfs interface for RAP test

:::::: TO: Wenhui Sheng <Wenhui.Sheng@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

[-- Attachment #2: .config.gz --]
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