3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Hellstrom <thellst...@vmware.com>

commit 26682480c202e7360cbcdc3bc9e962bf749c6b8d upstream.

The evict code may try to swap them out causing a BUG in the destroy
function.

Signed-off-by: Thomas Hellstrom <thellst...@vmware.com>
Reviewed-by: Jakob Bornecrantz <ja...@vmware.com>
Signed-off-by: Dave Airlie <airl...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -970,7 +970,7 @@ void vmw_resource_unreserve(struct vmw_r
        if (new_backup)
                res->backup_offset = new_backup_offset;
 
-       if (!res->func->may_evict)
+       if (!res->func->may_evict || res->id == -1)
                return;
 
        write_lock(&dev_priv->resource_lock);


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