From 198170ab97bbf2ca6362bb7100e9ed86d90aa51f Mon Sep 17 00:00:00 2001
From: Alan Hourihane <alanh@tungstengraphics.com>
Date: Tue, 23 Oct 2007 15:33:20 +0100
Subject: [PATCH] Need fb attached

---
 linux-core/drm_crtc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/linux-core/drm_crtc.c b/linux-core/drm_crtc.c
index bdea20c9..5bc02206 100644
--- a/linux-core/drm_crtc.c
+++ b/linux-core/drm_crtc.c
@@ -914,7 +914,9 @@ bool drm_initial_config(struct drm_device *dev, bool can_grow)
 		if (!output->crtc || !output->crtc->desired_mode)
 			continue;
 
-		drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0);
+		/* and needs an attached fb */
+		if (output->crtc->fb)
+			drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0);
 	}
 
 	drm_disable_unused_functions(dev);