[RFC] Repurpose reserved field in vblank event to crtc_id

Hi,

Right now, if an atomic commit sends multiple vblank events it is not possible to distiguish for each crtc each event is for in userspace. This series changes that be repurposing the reserved field in struct drm_event_vblank.

Would this be a sane thing to do?

Thanks, Ander

drivers/gpu/drm/drm_atomic.c | 7 +++++-- drivers/gpu/drm/drm_crtc.c | 1 + drivers/gpu/drm/drm_ioctl.c | 3 +++ include/uapi/drm/drm.h | 3 ++- 4 files changed, 11 insertions(+), 3 deletions(-)