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drm/gem-fb-helper: drm_gem_fbdev_fb_create() make funcs optional

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Make the drm_framebuffer_funcs argument optional for drivers that
don't need to set the dirty callback.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171115142001.45358-2-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes 2017-11-15 15:19:40 +01:00
parent c94bedabb3
commit e44f0801bb
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/drm_gem_framebuffer_helper.c
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@ -272,7 +272,8 @@ EXPORT_SYMBOL_GPL(drm_gem_fb_prepare_fb);
* @sizes: fbdev size description
* @pitch_align: Optional pitch alignment
* @obj: GEM object backing the framebuffer
* @funcs: vtable to be used for the new framebuffer object
* @funcs: Optional vtable to be used for the new framebuffer object when the
* dirty callback is needed.
*
* This function creates a framebuffer from a &drm_fb_helper_surface_size
* description for use in the &drm_fb_helper_funcs.fb_probe callback.
@ -300,6 +301,9 @@ drm_gem_fbdev_fb_create(struct drm_device *dev,
if (obj->size < mode_cmd.pitches[0] * mode_cmd.height)
return ERR_PTR(-EINVAL);
if (!funcs)
funcs = &drm_gem_fb_funcs;
return drm_gem_fb_alloc(dev, &mode_cmd, &obj, 1, funcs);
}
EXPORT_SYMBOL(drm_gem_fbdev_fb_create);