Re: [PATCH] drm/tegra: Use drm_gem_object_reference_unlocked

[kbuild test robot <lkp@xxxxxxxxx>]

Hi Daniel,

[auto build test ERROR on drm-intel/for-linux-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Daniel-Vetter/drm-tegra-Use-drm_gem_object_reference_unlocked/20151021-160838
config: arm-tegra_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   drivers/gpu/drm/tegra/gem.c: In function 'tegra_bo_put':
   drivers/gpu/drm/tegra/gem.c:31:21: warning: unused variable 'drm' [-Wunused-variable]
     struct drm_device *drm = obj->gem.dev;
                        ^
   drivers/gpu/drm/tegra/gem.c: In function 'tegra_bo_get':
>> drivers/gpu/drm/tegra/gem.c:75:2: error: implicit declaration of function 'drm_gem_object_reference_unlocked' [-Werror=implicit-function-declaration]
     drm_gem_object_reference_unlocked(&obj->gem);
     ^
   drivers/gpu/drm/tegra/gem.c:73:21: warning: unused variable 'drm' [-Wunused-variable]
     struct drm_device *drm = obj->gem.dev;
                        ^
   cc1: some warnings being treated as errors

vim +/drm_gem_object_reference_unlocked +75 drivers/gpu/drm/tegra/gem.c

    25		return container_of(bo, struct tegra_bo, base);
    26	}
    27	
    28	static void tegra_bo_put(struct host1x_bo *bo)
    29	{
    30		struct tegra_bo *obj = host1x_to_tegra_bo(bo);
  > 31		struct drm_device *drm = obj->gem.dev;
    32	
    33		drm_gem_object_unreference_unlocked(&obj->gem);
    34	}
    35	
    36	static dma_addr_t tegra_bo_pin(struct host1x_bo *bo, struct sg_table **sgt)
    37	{
    38		struct tegra_bo *obj = host1x_to_tegra_bo(bo);
    39	
    40		return obj->paddr;
    41	}
    42	
    43	static void tegra_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt)
    44	{
    45	}
    46	
    47	static void *tegra_bo_mmap(struct host1x_bo *bo)
    48	{
    49		struct tegra_bo *obj = host1x_to_tegra_bo(bo);
    50	
    51		return obj->vaddr;
    52	}
    53	
    54	static void tegra_bo_munmap(struct host1x_bo *bo, void *addr)
    55	{
    56	}
    57	
    58	static void *tegra_bo_kmap(struct host1x_bo *bo, unsigned int page)
    59	{
    60		struct tegra_bo *obj = host1x_to_tegra_bo(bo);
    61	
    62		return obj->vaddr + page * PAGE_SIZE;
    63	}
    64	
    65	static void tegra_bo_kunmap(struct host1x_bo *bo, unsigned int page,
    66				    void *addr)
    67	{
    68	}
    69	
    70	static struct host1x_bo *tegra_bo_get(struct host1x_bo *bo)
    71	{
    72		struct tegra_bo *obj = host1x_to_tegra_bo(bo);
    73		struct drm_device *drm = obj->gem.dev;
    74	
  > 75		drm_gem_object_reference_unlocked(&obj->gem);
    76	
    77		return bo;
    78	}

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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