From 3466a3def2c01e0ee3e2035f2dc988816cfab460 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 6 Nov 2019 22:34:10 +0000
Subject: [PATCH] drm/i915/gt: Cleanup heartbeat systole first
Before we grab the engine wakeref, tidy up the previous heartbeat
request. If we then abort because the engine powerwell is off, we ensure
the request is freed as we know we will not have freed it when
cancelling the work (as the work is running!).
Fixes: 841e86728615 ("drm/i915/gt: Only drop heartbeat.systole if the sole owner")
References: 058179e72e09 ("drm/i915/gt: Replace hangcheck by heartbeats")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191106223410.30334-1-chris@chris-wilson.co.uk
---
drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
index 06aa14c7aa8c7..c91fd4e4af293 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
@@ -63,15 +63,15 @@ static void heartbeat(struct work_struct *wrk)
struct intel_context *ce = engine->kernel_context;
struct i915_request *rq;
- if (!intel_engine_pm_get_if_awake(engine))
- return;
-
rq = engine->heartbeat.systole;
if (rq && i915_request_completed(rq)) {
i915_request_put(rq);
engine->heartbeat.systole = NULL;
}
+ if (!intel_engine_pm_get_if_awake(engine))
+ return;
+
if (intel_gt_is_wedged(engine->gt))
goto out;
--
2.30.2