drm/fb-helper: Handle function NULL argument

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Make functions tolerate that the drm_fb_helper argument is NULL.
This is useful for drivers that continue probing when fbdev emulation
fails and not having to do this check themselves.
Update docs for functions that already handles this.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171030153951.56269-2-noralf@tronnes.org

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Noralf Trønnes 2017-10-30 16:39:37 +01:00

parent 37569925f4

commit c777990fb4

1 changed files with 17 additions and 11 deletions

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drivers/gpu/drm/drm_fb_helper.c

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