From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Write and reads following the block changed use engine specific use counters
and unless that is matched here force wake use counting goes bad. Same
force wake is attempted to be taken twice which leads to at least time outs.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_lrc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 3048d78..4b33767 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -301,7 +301,7 @@ static void execlists_elsp_write(struct intel_engine_cs *ring,
* Instead, we do the runtime_pm_get/put when creating/destroying requests.
*/
spin_lock_irqsave(&dev_priv->uncore.lock, flags);
- if (IS_CHERRYVIEW(dev_priv->dev)) {
+ if (IS_CHERRYVIEW(dev_priv->dev) || IS_GEN9(dev_priv->dev)) {
if (dev_priv->uncore.fw_rendercount++ == 0)
dev_priv->uncore.funcs.force_wake_get(dev_priv,
FORCEWAKE_RENDER);
@@ -326,7 +326,7 @@ static void execlists_elsp_write(struct intel_engine_cs *ring,
/* Release Force Wakeup (see the big comment above). */
spin_lock_irqsave(&dev_priv->uncore.lock, flags);
- if (IS_CHERRYVIEW(dev_priv->dev)) {
+ if (IS_CHERRYVIEW(dev_priv->dev) || IS_GEN9(dev_priv->dev)) {
if (--dev_priv->uncore.fw_rendercount == 0)
dev_priv->uncore.funcs.force_wake_put(dev_priv,
FORCEWAKE_RENDER);
--
2.1.0
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