Re: [PATCH] drm/ast: radeon amdgpu for ast add prime

[kernel test robot]

Hi oushixiong,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm/drm-next]
[also build test WARNING on drm-intel/for-linux-next linus/master v5.19 next-20220811]
[cannot apply to drm-misc/drm-misc-next drm-tip/drm-tip]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/oushixiong/drm-ast-radeon-amdgpu-for-ast-add-prime/20220811-115710
base:   git://anongit.freedesktop.org/drm/drm drm-next
config: arm64-randconfig-r033-20220810 (https://download.01.org/0day-ci/archive/20220812/202208120134.9nXiGv1Q-lkp@xxxxxxxxx/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 5f1c7e2cc5a3c07cbc2412e851a7283c1841f520)
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://github.com/intel-lab-lkp/linux/commit/1b9b79a00132f2917ca66bea714a6f21fc939b0f
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review oushixiong/drm-ast-radeon-amdgpu-for-ast-add-prime/20220811-115710
        git checkout 1b9b79a00132f2917ca66bea714a6f21fc939b0f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/ast/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/ast/ast_drv.c:54:24: warning: no previous prototype for function 'ast_gem_prime_import_sg_table' [-Wmissing-prototypes]
   struct drm_gem_object *ast_gem_prime_import_sg_table(struct drm_device *dev,
                          ^
   drivers/gpu/drm/ast/ast_drv.c:54:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct drm_gem_object *ast_gem_prime_import_sg_table(struct drm_device *dev,
   ^
   static 
   1 warning generated.
--
>> drivers/gpu/drm/ast/ast_mode.c:1713:5: warning: no previous prototype for function 'ast_handle_damage' [-Wmissing-prototypes]
   int ast_handle_damage(struct drm_framebuffer *fb, int x, int y,
       ^
   drivers/gpu/drm/ast/ast_mode.c:1713:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int ast_handle_damage(struct drm_framebuffer *fb, int x, int y,
   ^
   static 
>> drivers/gpu/drm/ast/ast_mode.c:1772:5: warning: no previous prototype for function 'ast_user_framebuffer_dirty' [-Wmissing-prototypes]
   int ast_user_framebuffer_dirty(struct drm_framebuffer *fb,
       ^
   drivers/gpu/drm/ast/ast_mode.c:1772:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int ast_user_framebuffer_dirty(struct drm_framebuffer *fb,
   ^
   static 
>> drivers/gpu/drm/ast/ast_mode.c:1815:1: warning: no previous prototype for function 'ast_gem_fb_create_with_dirty' [-Wmissing-prototypes]
   ast_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file,
   ^
   drivers/gpu/drm/ast/ast_mode.c:1814:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct drm_framebuffer *
   ^
   static 
   3 warnings generated.


vim +/ast_gem_prime_import_sg_table +54 drivers/gpu/drm/ast/ast_drv.c

    53	
  > 54	struct drm_gem_object *ast_gem_prime_import_sg_table(struct drm_device *dev,
    55						struct dma_buf_attachment *attach,
    56						struct sg_table *sg)
    57	{
    58		struct drm_gem_vram_object *gbo;
    59		struct dma_resv *resv = attach->dmabuf->resv;
    60	
    61		ww_mutex_lock(&resv->lock, NULL);
    62		gbo = drm_gem_vram_create(dev, attach->dmabuf->size, 0, sg, resv);
    63		ww_mutex_unlock(&resv->lock);
    64	
    65		if (IS_ERR(gbo))
    66			return NULL;
    67	
    68		return &gbo->bo.base;
    69	}
    70	

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