[Intel-gfx] [PATCH] drm/i915/gt: Exercise lrc_wa_ctx initialisation failure

[Chris Wilson]

Inject a fault into lrc_init_wa_ctx() to ensure that we can tolerate a
failure to construct the workarounds.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 703d9ecc3f7e..f0de3f661042 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1525,6 +1525,9 @@ int lrc_init_wa_ctx(struct intel_engine_cs *engine)
 
 	__i915_gem_object_flush_map(wa_ctx->vma->obj, 0, batch_ptr - batch);
 	__i915_gem_object_release_map(wa_ctx->vma->obj);
+
+	if (i915_inject_probe_error(engine->i915, -ENODEV))
+		ret = -ENODEV;
 	if (ret)
 		lrc_fini_wa_ctx(engine);
 
-- 
2.20.1