[PATCH 5/5] drm: Check plane src coordinates correctly during page flip for atomic drivers

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Instead of relying on the old crtc-{x,y,mode} gunk, dig out the primary
plane coordinates from the plane state when checking them against the
new framebuffer during page flip.

Cc: Matt Roper <matthew.d.roper at intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_crtc.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index ffaa3f5..52feffc 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -5193,7 +5193,14 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 		goto out;
 	}
 
-	ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
+	if (crtc->state) {
+		const struct drm_plane_state *state = crtc->primary->state;
+
+		ret = check_src_coords(state->src_x, state->src_y,
+				       state->src_w, state->src_h, fb);
+	} else {
+		ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
+	}
 	if (ret)
 		goto out;
 
-- 
2.4.9