diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index 3778360eceea0cc44d2f2213090d5e1ed2e670f4..fda67468e603b6169393b92bc4922afef8b4d8ce 100644
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -138,7 +138,7 @@ static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 				break;
 		}
 
-		if (!agpmem)
+		if (&agpmem->head == &dev->agp->memory)
 			goto vm_fault_error;
 
 		/*