Hi Liu,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on shawnguo/for-next]
[also build test WARNING on robh/for-next soc/for-next clk/clk-next linus/master v5.10-rc6 next-20201201]
[cannot apply to xlnx/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Liu-Ying/drm-imx-Introduce-i-MX8qm-qxp-DPU-DRM/20201203-111805
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next
config: arm-allyesconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
        # https://github.com/0day-ci/linux/commit/9782ac29f477208d26405e56ccaa08703bef8354
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Liu-Ying/drm-imx-Introduce-i-MX8qm-qxp-DPU-DRM/20201203-111805
        git checkout 9782ac29f477208d26405e56ccaa08703bef8354
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

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/imx/dpu/dpu-gammacor.c:34: warning: "MODE_MASK" redefined
      34 | #define  MODE_MASK  BIT(0)
         | 
   In file included from arch/arm/include/asm/ptrace.h:10,
                    from arch/arm/include/asm/irqflags.h:7,
                    from include/linux/irqflags.h:16,
                    from arch/arm/include/asm/bitops.h:28,
                    from include/linux/bitops.h:29,
                    from include/linux/kernel.h:12,
                    from include/asm-generic/bug.h:20,
                    from arch/arm/include/asm/bug.h:60,
                    from include/linux/bug.h:5,
                    from include/linux/io.h:11,
                    from drivers/gpu/drm/imx/dpu/dpu-gammacor.c:7:
   arch/arm/include/uapi/asm/ptrace.h:67: note: this is the location of the previous definition
      67 | #define MODE_MASK 0x0000001f
         | 
--
>> drivers/gpu/drm/imx/dpu/dpu-hscaler.c:23: warning: "MODE_MASK" redefined
      23 | #define  MODE_MASK   0x1
         | 
   In file included from arch/arm/include/asm/ptrace.h:10,
                    from arch/arm/include/asm/irqflags.h:7,
                    from include/linux/irqflags.h:16,
                    from arch/arm/include/asm/bitops.h:28,
                    from include/linux/bitops.h:29,
                    from include/linux/kernel.h:12,
                    from include/asm-generic/bug.h:20,
                    from arch/arm/include/asm/bug.h:60,
                    from include/linux/bug.h:5,
                    from include/linux/io.h:11,
                    from drivers/gpu/drm/imx/dpu/dpu-hscaler.c:7:
   arch/arm/include/uapi/asm/ptrace.h:67: note: this is the location of the previous definition
      67 | #define MODE_MASK 0x0000001f
         | 
--
>> drivers/gpu/drm/imx/dpu/dpu-layerblend.c:32: warning: "MODE_MASK" redefined
      32 | #define  MODE_MASK    BIT(0)
         | 
   In file included from arch/arm/include/asm/ptrace.h:10,
                    from arch/arm/include/asm/irqflags.h:7,
                    from include/linux/irqflags.h:16,
                    from arch/arm/include/asm/bitops.h:28,
                    from include/linux/bitops.h:29,
                    from include/linux/kernel.h:12,
                    from include/asm-generic/bug.h:20,
                    from arch/arm/include/asm/bug.h:60,
                    from include/linux/bug.h:5,
                    from include/linux/io.h:11,
                    from drivers/gpu/drm/imx/dpu/dpu-layerblend.c:8:
   arch/arm/include/uapi/asm/ptrace.h:67: note: this is the location of the previous definition
      67 | #define MODE_MASK 0x0000001f
         | 
--
>> drivers/gpu/drm/imx/dpu/dpu-vscaler.c:25: warning: "MODE_MASK" redefined
      25 | #define  MODE_MASK   0x1
         | 
   In file included from arch/arm/include/asm/ptrace.h:10,
                    from arch/arm/include/asm/irqflags.h:7,
                    from include/linux/irqflags.h:16,
                    from arch/arm/include/asm/bitops.h:28,
                    from include/linux/bitops.h:29,
                    from include/linux/kernel.h:12,
                    from include/asm-generic/bug.h:20,
                    from arch/arm/include/asm/bug.h:60,
                    from include/linux/bug.h:5,
                    from include/linux/io.h:11,
                    from drivers/gpu/drm/imx/dpu/dpu-vscaler.c:7:
   arch/arm/include/uapi/asm/ptrace.h:67: note: this is the location of the previous definition
      67 | #define MODE_MASK 0x0000001f
         | 

vim +/MODE_MASK +34 drivers/gpu/drm/imx/dpu/dpu-gammacor.c

    32	
    33	#define CONTROL			0x14
  > 34	#define  MODE_MASK		BIT(0)
    35	#define  ALHPAMASK		BIT(4)
    36	#define  ALHPAINVERT		BIT(5)
    37	

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