The engine->kernel_context is a special case for request emission. Since
it is used as the barrier within the engine's wakeref, we must acquire the
wakeref before submitting a request to the kernel_context.
Reported-by: Lionel Landwerlin <lionel.g.landwer...@intel.com>
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Lionel Landwerlin <lionel.g.landwer...@intel.com>
---
drivers/gpu/drm/i915/i915_perf.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 0838a12e2dc5..2334c45f1d08 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -2196,7 +2196,9 @@ static int gen8_modify_self(struct intel_context *ce,
struct i915_request *rq;
int err;
+ intel_engine_pm_get(ce->engine);
rq = i915_request_create(ce);
+ intel_engine_pm_put(ce->engine);
if (IS_ERR(rq))
return PTR_ERR(rq);
--
2.25.1
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