Merge branch 'upstream/ticketlock-cleanup' of git://github.com/jsgf/linux-xen into...

[pandora-kernel.git] / drivers / gpu / drm / nouveau / nv04_crtc.c

diff --git a/drivers/gpu/drm/nouveau/nv04_crtc.c b/drivers/gpu/drm/nouveau/nv04_crtc.c
index 118261d..5e45398 100644 (file)
--- a/drivers/gpu/drm/nouveau/nv04_crtc.c
+++ b/drivers/gpu/drm/nouveau/nv04_crtc.c
@@ -781,11 +781,20 @@ nv04_crtc_do_mode_set_base(struct drm_crtc *crtc,
        struct drm_device *dev = crtc->dev;
        struct drm_nouveau_private *dev_priv = dev->dev_private;
        struct nv04_crtc_reg *regp = &dev_priv->mode_reg.crtc_reg[nv_crtc->index];
-       struct drm_framebuffer *drm_fb = nv_crtc->base.fb;
-       struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
+       struct drm_framebuffer *drm_fb;
+       struct nouveau_framebuffer *fb;
        int arb_burst, arb_lwm;
        int ret;
 
+       NV_DEBUG_KMS(dev, "index %d\n", nv_crtc->index);
+
+       /* no fb bound */
+       if (!atomic && !crtc->fb) {
+               NV_DEBUG_KMS(dev, "No FB bound\n");
+               return 0;
+       }
+
+
        /* If atomic, we want to switch to the fb we were passed, so
         * now we update pointers to do that.  (We don't pin; just
         * assume we're already pinned and update the base address.)
@@ -794,6 +803,8 @@ nv04_crtc_do_mode_set_base(struct drm_crtc *crtc,
                drm_fb = passed_fb;
                fb = nouveau_framebuffer(passed_fb);
        } else {
+               drm_fb = crtc->fb;
+               fb = nouveau_framebuffer(crtc->fb);
                /* If not atomic, we can go ahead and pin, and unpin the
                 * old fb we were passed.
                 */