From 32e3ae50b287352a291803979c400309ca8f92ff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Wed, 5 Feb 2020 20:35:42 +0200
Subject: [PATCH] drm/i915/hpd: Replace the loop-within-loop with two
independent loops
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No point in looping over all connectors for each hpd pin. Just loop
over each connector first and deal with each one's hpd pin. Then
loop over all the hpd pins to mark them as enabled again.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200205183546.9291-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
---
drivers/gpu/drm/i915/display/intel_hotplug.c | 39 +++++++++++---------
1 file changed, 21 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c
index 127a2f28c1acc..531021002e342 100644
--- a/drivers/gpu/drm/i915/display/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
@@ -242,36 +242,39 @@ static void intel_hpd_irq_storm_reenable_work(struct work_struct *work)
container_of(work, typeof(*dev_priv),
hotplug.reenable_work.work);
struct drm_device *dev = &dev_priv->drm;
+ struct drm_connector_list_iter conn_iter;
+ struct intel_connector *connector;
intel_wakeref_t wakeref;
enum hpd_pin pin;
wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
spin_lock_irq(&dev_priv->irq_lock);
- for_each_hpd_pin(pin) {
- struct drm_connector_list_iter conn_iter;
- struct intel_connector *connector;
- if (dev_priv->hotplug.stats[pin].state != HPD_DISABLED)
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ for_each_intel_connector_iter(connector, &conn_iter) {
+ pin = intel_connector_hpd_pin(connector);
+ if (pin == HPD_NONE ||
+ dev_priv->hotplug.stats[pin].state != HPD_DISABLED)
continue;
- dev_priv->hotplug.stats[pin].state = HPD_ENABLED;
-
- drm_connector_list_iter_begin(dev, &conn_iter);
- for_each_intel_connector_iter(connector, &conn_iter) {
- if (intel_connector_hpd_pin(connector) == pin) {
- if (connector->base.polled != connector->polled)
- DRM_DEBUG_DRIVER("Reenabling HPD on connector %s\n",
- connector->base.name);
- connector->base.polled = connector->polled;
- if (!connector->base.polled)
- connector->base.polled = DRM_CONNECTOR_POLL_HPD;
- }
- }
- drm_connector_list_iter_end(&conn_iter);
+ if (connector->base.polled != connector->polled)
+ DRM_DEBUG_DRIVER("Reenabling HPD on connector %s\n",
+ connector->base.name);
+ connector->base.polled = connector->polled;
+ if (!connector->base.polled)
+ connector->base.polled = DRM_CONNECTOR_POLL_HPD;
+ }
+ drm_connector_list_iter_end(&conn_iter);
+
+ for_each_hpd_pin(pin) {
+ if (dev_priv->hotplug.stats[pin].state == HPD_DISABLED)
+ dev_priv->hotplug.stats[pin].state = HPD_ENABLED;
}
+
if (dev_priv->display_irqs_enabled && dev_priv->display.hpd_irq_setup)
dev_priv->display.hpd_irq_setup(dev_priv);
+
spin_unlock_irq(&dev_priv->irq_lock);
intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
--
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