[PATCH] drm/vc4: Return -EBUSY if there's already a pending flip event.

From: Robert Foss robert.foss@collabora.com

As per the docs, atomic_commit should return -EBUSY "if an asycnhronous update is requested and there is an earlier update pending".

This patch is based on the rockchip patch below: http://article.gmane.org/gmane.comp.video.dri.devel/151678

Note: This patch was resent as the original submission wasn't addressed to the apparopriate recipients.

Robert Foss (1): drm/vc4: Return -EBUSY if there's already a pending flip event.

drivers/gpu/drm/vc4/vc4_crtc.c | 6 ++++++ drivers/gpu/drm/vc4/vc4_drv.h | 1 + drivers/gpu/drm/vc4/vc4_kms.c | 20 ++++++++++++++++++-- 3 files changed, 25 insertions(+), 2 deletions(-)