1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_state.c b/drivers/gpu/drm/radeon/radeon_state.c
index 44b6d66b0ab3..8e69dc485dcb 100644
--- a/drivers/gpu/drm/radeon/radeon_state.c
+++ b/drivers/gpu/drm/radeon/radeon_state.c
@@ -105,6 +105,7 @@ static __inline__ int radeon_check_and_fixup_packets(drm_radeon_private_t *
                         DRM_ERROR("Invalid depth buffer offset\n");
                         return -EINVAL;
                 }
+                dev_priv->have_z_offset = 1;
                 break;
 
         case RADEON_EMIT_PP_CNTL:
@@ -898,6 +899,11 @@ static void radeon_cp_dispatch_clear(struct drm_device * dev,
                 if (tmp & RADEON_BACK)
                         flags |= RADEON_FRONT;
         }
+        if (flags & (RADEON_DEPTH|RADEON_STENCIL)) {
+                if (!dev_priv->have_z_offset)
+                        printk_once(KERN_ERR "radeon: illegal depth clear request. Buggy mesa detected - please update.\n");
+                flags &= ~(RADEON_DEPTH | RADEON_STENCIL);
+        }
 
         if (flags & (RADEON_FRONT | RADEON_BACK)) {