drm/i915: print warning if vmi915_gem_fault error is not handled

Falling into default case in vmi915_gem_fault is a bug. Be more
verbose about it.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 5fa3419461c5..b55eee38af76 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1409,6 +1409,7 @@ out:
         case -ENOMEM:
                 return VM_FAULT_OOM;
         default:
+                WARN_ON_ONCE(ret);
                 return VM_FAULT_SIGBUS;
         }
 }