[PATCH] Skip disabled CRTCs in radeon_scanout_(do_)update

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

The vblank / page flip ioctls don't work as expected for a disabled CRTC.

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 src/radeon_kms.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/radeon_kms.c b/src/radeon_kms.c
index 25a746d..ba95653 100644
--- a/src/radeon_kms.c
+++ b/src/radeon_kms.c
@@ -338,7 +338,8 @@ radeon_scanout_do_update(xf86CrtcPtr xf86_crtc, int scanout_id)
     RADEONInfoPtr info;
     Bool force;
 
-    if (drmmode_crtc->dpms_mode != DPMSModeOn ||
+    if (!xf86_crtc->enabled ||
+	drmmode_crtc->dpms_mode != DPMSModeOn ||
 	!drmmode_crtc->scanout[scanout_id].pixmap)
 	return FALSE;
 
@@ -409,7 +410,8 @@ radeon_scanout_update(xf86CrtcPtr xf86_crtc)
     DrawablePtr pDraw;
     BoxRec extents;
 
-    if (drmmode_crtc->scanout_update_pending ||
+    if (!xf86_crtc->enabled ||
+	drmmode_crtc->scanout_update_pending ||
 	!drmmode_crtc->scanout[0].pixmap ||
 	drmmode_crtc->dpms_mode != DPMSModeOn)
 	return;
-- 
2.1.4