Since the state capture happens from a deferred work, we may drop the
last power domain/RPM reference since the error got triggered (from an
interrupt handler for example). I hit this by writing to the i915_wedged
debugfs file.
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_irq.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index b8f64d7..a586c16 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2174,6 +2174,8 @@ static void i915_error_work_func(struct work_struct *work)
kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE,
reset_event);
+ intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
+
/*
* All state reset _must_ be completed before we update the
* reset counter, for otherwise waiters might miss the reset
@@ -2184,6 +2186,8 @@ static void i915_error_work_func(struct work_struct *work)
intel_display_handle_reset(dev);
+ intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
+
if (ret == 0) {
/*
* After all the gem state is reset, increment the reset
--
1.8.4
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