drm/i915: disable rps irqs earlier during suspend/unload
After the previous patch RPS disabling doesn't depend any more on the
first level interrupts being disabled, so we can move it everywhere
earlier. Doing so let's us think about the uninitialization steps
afterwards independently of any asynchronous RPS events that can happen
atm. It also makes the system/runtime suspend time RPS disabling more
uniform. Finally this gets rid of the WARN in
intel_suspend_gt_powersave(), which we can hit if a final RPS work runs
after we disabled the first level interrupts.
Testcase: igt/pm_rpm
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=82939
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 122ea95..19558d6 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -584,6 +584,8 @@
return error;
}
+ intel_suspend_gt_powersave(dev);
+
/*
* Disable CRTCs directly since we want to preserve sw state
* for _thaw. Also, power gate the CRTC power wells.
@@ -595,15 +597,11 @@
intel_dp_mst_suspend(dev);
- flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
intel_runtime_pm_disable_interrupts(dev_priv);
intel_hpd_cancel_work(dev_priv);
intel_suspend_encoders(dev_priv);
- intel_suspend_gt_powersave(dev);
-
intel_suspend_hw(dev);
}
@@ -1393,9 +1391,8 @@
i915_gem_release_all_mmaps(dev_priv);
mutex_unlock(&dev->struct_mutex);
- flush_delayed_work(&dev_priv->rps.delayed_resume_work);
- intel_runtime_pm_disable_interrupts(dev_priv);
intel_suspend_gt_powersave(dev);
+ intel_runtime_pm_disable_interrupts(dev_priv);
ret = intel_suspend_complete(dev_priv);
if (ret) {
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 32cec9d..ca4b787 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13540,11 +13540,13 @@
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_connector *connector;
+ intel_disable_gt_powersave(dev);
+
intel_backlight_unregister(dev);
/*
* Interrupts and polling as the first thing to avoid creating havoc.
- * Too much stuff here (turning of rps, connectors, ...) would
+ * Too much stuff here (turning of connectors, ...) would
* experience fancy races otherwise.
*/
intel_irq_uninstall(dev_priv);
@@ -13561,8 +13563,6 @@
intel_disable_fbc(dev);
- intel_disable_gt_powersave(dev);
-
ironlake_teardown_rc6(dev);
mutex_unlock(&dev->struct_mutex);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 96a948a..41c51fe 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6183,9 +6183,6 @@
{
struct drm_i915_private *dev_priv = dev->dev_private;
- /* Interrupts should be disabled already to avoid re-arming. */
- WARN_ON(intel_irqs_enabled(dev_priv));
-
if (INTEL_INFO(dev)->gen < 6)
return;