• Daniel Vetter's avatar
    drm/<drivers>: Unified handling of unimplemented fb->create_handle · af26ef3b
    Daniel Vetter authored
    Some drivers don't have real ->create_handle callbacks.
    
    - cirrus/ast/mga200: Returns either 0 or -EINVAL.
    
    - udl: Didn't even bother with a callback, leading to a nice
      userspace-triggerable OOPS.
    
    - vmwgfx: This driver bothered with an implementation to return 0 as
      the handle (which is the canonical no-obj gem handle).
    
    All have in common that ->create_handle doesn't really make too much
    sense for them - that ioctl is used only for seamless fb takeover in
    the radeon/nouveau/i915 ddx drivers. So allow drivers to not implement
    this and return a consistent -ENODEV.
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    af26ef3b
drm_crtc.c 96.2 KB