[Intel-xe] [drm-xe:drm-xe-next 4/15] drivers/gpu/drm/xe/display/intel_fbdev_fb.c:14:25: warning: no previous prototype for 'intel_fbdev_fb_alloc'

[kernel test robot]

tree:   https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next
head:   14d1d786caacdb3438d07ab86fabf2e36c8151cc
commit: 285061d4ad89d38201433b84994dac8061afa120 [4/15] fixup! drm/xe/display: Implement display support
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20231115/202311152249.gjSKciOA-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231115/202311152249.gjSKciOA-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311152249.gjSKciOA-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/xe/display/intel_fbdev_fb.c:14:25: warning: no previous prototype for 'intel_fbdev_fb_alloc' [-Wmissing-prototypes]
      14 | struct drm_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper,
         |                         ^~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/xe/display/intel_fbdev_fb.c:77:5: warning: no previous prototype for 'intel_fbdev_fb_fill_info' [-Wmissing-prototypes]
      77 | int intel_fbdev_fb_fill_info(struct drm_i915_private *i915, struct fb_info *info,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/intel_fbdev_fb_alloc +14 drivers/gpu/drm/xe/display/intel_fbdev_fb.c

    13	
  > 14	struct drm_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper,
    15				 struct drm_fb_helper_surface_size *sizes)
    16	{
    17		struct drm_framebuffer *fb;
    18		struct drm_device *dev = helper->dev;
    19		struct drm_i915_private *dev_priv = to_i915(dev);
    20		struct drm_mode_fb_cmd2 mode_cmd = {};
    21		struct drm_i915_gem_object *obj;
    22		int size;
    23	
    24		/* we don't do packed 24bpp */
    25		if (sizes->surface_bpp == 24)
    26			sizes->surface_bpp = 32;
    27	
    28		mode_cmd.width = sizes->surface_width;
    29		mode_cmd.height = sizes->surface_height;
    30	
    31		mode_cmd.pitches[0] = ALIGN(mode_cmd.width *
    32					    DIV_ROUND_UP(sizes->surface_bpp, 8), XE_PAGE_SIZE);
    33		mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
    34								  sizes->surface_depth);
    35	
    36		size = mode_cmd.pitches[0] * mode_cmd.height;
    37		size = PAGE_ALIGN(size);
    38		obj = ERR_PTR(-ENODEV);
    39	
    40		if (!IS_DGFX(dev_priv)) {
    41			obj = xe_bo_create_pin_map(dev_priv, xe_device_get_root_tile(dev_priv),
    42						   NULL, size,
    43						   ttm_bo_type_kernel, XE_BO_SCANOUT_BIT |
    44						   XE_BO_CREATE_STOLEN_BIT |
    45						   XE_BO_CREATE_PINNED_BIT);
    46			if (!IS_ERR(obj))
    47				drm_info(&dev_priv->drm, "Allocated fbdev into stolen\n");
    48			else
    49				drm_info(&dev_priv->drm, "Allocated fbdev into stolen failed: %li\n", PTR_ERR(obj));
    50		}
    51		if (IS_ERR(obj)) {
    52			obj = xe_bo_create_pin_map(dev_priv, xe_device_get_root_tile(dev_priv), NULL, size,
    53						  ttm_bo_type_kernel, XE_BO_SCANOUT_BIT |
    54						  XE_BO_CREATE_VRAM_IF_DGFX(xe_device_get_root_tile(dev_priv)) |
    55						  XE_BO_CREATE_PINNED_BIT);
    56		}
    57	
    58		if (IS_ERR(obj)) {
    59			drm_err(&dev_priv->drm, "failed to allocate framebuffer (%pe)\n", obj);
    60			fb = ERR_PTR(-ENOMEM);
    61			goto err;
    62		}
    63	
    64		fb = intel_framebuffer_create(obj, &mode_cmd);
    65		if (IS_ERR(fb)) {
    66			xe_bo_unpin_map_no_vm(obj);
    67			goto err;
    68		}
    69	
    70		drm_gem_object_put(intel_bo_to_drm_bo(obj));
    71		return fb;
    72	
    73	err:
    74		return fb;
    75	}
    76	
  > 77	int intel_fbdev_fb_fill_info(struct drm_i915_private *i915, struct fb_info *info,

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