From 22062dbacf7ccc325c8b0ccc3fb90bf487be5c5c Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 27 Jun 2013 17:52:11 +0200 Subject: [PATCH] drm/i915: s/hotplug_irq_storm_detect/intel_hpd_irq_handler/ The combination of Paulo's fifo underrun detection code and Egbert's hpd storm handling code unfortunately made the hpd storm handling code racy. To avoid duplicating tricky interrupt locking code over all platforms start with a bit of refactoring. This patch is the very first step since in the end the irq storm handling code will handle all hotplug logic (and so also encapsulate the locking nicely). v2: Rebase on top of the i965g/gm sdvo hpd fix. Cc: Egbert Eich Reviewed-by: Egbert Eich Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_irq.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index bff9abda81c6..378ade0d8c9f 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -875,9 +875,9 @@ static void gen6_queue_rps_work(struct drm_i915_private *dev_priv, #define HPD_STORM_DETECT_PERIOD 1000 #define HPD_STORM_THRESHOLD 5 -static inline bool hotplug_irq_storm_detect(struct drm_device *dev, - u32 hotplug_trigger, - const u32 *hpd) +static inline bool intel_hpd_irq_handler(struct drm_device *dev, + u32 hotplug_trigger, + const u32 *hpd) { drm_i915_private_t *dev_priv = dev->dev_private; unsigned long irqflags; @@ -1018,7 +1018,7 @@ static irqreturn_t valleyview_irq_handler(int irq, void *arg) DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", hotplug_status); if (hotplug_trigger) { - if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915)) + if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915)) i915_hpd_irq_setup(dev); queue_work(dev_priv->wq, &dev_priv->hotplug_work); @@ -1049,7 +1049,7 @@ static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir) u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK; if (hotplug_trigger) { - if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_ibx)) + if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_ibx)) ibx_hpd_irq_setup(dev); queue_work(dev_priv->wq, &dev_priv->hotplug_work); } @@ -1154,7 +1154,7 @@ static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; if (hotplug_trigger) { - if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_cpt)) + if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt)) ibx_hpd_irq_setup(dev); queue_work(dev_priv->wq, &dev_priv->hotplug_work); } @@ -3232,7 +3232,7 @@ static irqreturn_t i915_irq_handler(int irq, void *arg) DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", hotplug_status); if (hotplug_trigger) { - if (hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915)) + if (intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915)) i915_hpd_irq_setup(dev); queue_work(dev_priv->wq, &dev_priv->hotplug_work); @@ -3473,7 +3473,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg) DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", hotplug_status); if (hotplug_trigger) { - if (hotplug_irq_storm_detect(dev, hotplug_trigger, + if (intel_hpd_irq_handler(dev, hotplug_trigger, IS_G4X(dev) ? hpd_status_gen4 : hpd_status_i915)) i915_hpd_irq_setup(dev); queue_work(dev_priv->wq,