Op 07-10-16 om 21:49 schreef Chris Wilson: > To enable the vblank itself, we need to have an RPM wakeref for the mmio > access, and whilst generating the vblank interrupts we continue to > require the rpm wakeref. The assumption is that the RPM wakeref is held > by the display powerwell held by the active pipe. As this chain was not > obvious to me chasing the drm_wait_vblank ioctl, document it with a WARN > during *_vblank_enable(). > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> Don't we prevent enabling the vblank irq through drm_crtc_vblank_on/off? I'd rather not have things look at crtc->state if possible, locking might not help you. ~Maarten _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
