From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
In commit 003342a50021 ("drm/i915: Keep track of active
forcewake domains in a bitmask") I forgot to adjust the
newly introduce fw_domains_active state across reset.
This caused the assert_forcewakes_inactive to trigger
during suspend and resume if there were user held
forcewakes.
v2: Bitmask checks are required since vfuncs are not
always present.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Fixes: 003342a50021 ("drm/i915: Keep track of active forcewake domains in a bitmask")
Testcase: igt/drv_suspend/forcewake
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: "Paneri, Praveen" <praveen.paneri@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: v4.10+ <stable@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_uncore.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 2a3f35c30501..7efae77faca0 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -304,12 +304,14 @@ static void intel_uncore_forcewake_reset(struct drm_i915_private *dev_priv,
fw = dev_priv->uncore.fw_domains_active;
if (fw)
dev_priv->uncore.funcs.force_wake_put(dev_priv, fw);
+ dev_priv->uncore.fw_domains_active = 0;
fw_domains_reset(dev_priv, FORCEWAKE_ALL);
if (restore) { /* If reset with a user forcewake, try to restore */
if (fw)
dev_priv->uncore.funcs.force_wake_get(dev_priv, fw);
+ dev_priv->uncore.fw_domains_active = fw;
if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv))
dev_priv->uncore.fifo_count =
--
2.9.3