[Intel-gfx] [PATCH] drm/i915/display: Inject a failure into the initial modeset

[Chris Wilson]

Experiment with how fault tolerant we are if the initial modeset fails
and we need to abort the driver load.

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 6e5b93f6a25e..86124b8d156d 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -18456,7 +18456,9 @@ static int intel_initial_commit(struct drm_device *dev)
 		}
 	}
 
-	ret = drm_atomic_commit(state);
+	ret = -ENODEV;
+	if (!i915_inject_probe_failure(to_i915(dev)))
+		ret = drm_atomic_commit(state);
 
 out:
 	if (ret == -EDEADLK) {
-- 
2.20.1