From: Chris Wilson Date: Fri, 10 Jan 2014 18:49:20 +0000 (+0000) Subject: drm/i915: Only WARN about a stuck hotplug irq ONCE X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3432087ef846d760427eceff0ff4e7d0a2565b8a;p=linux-beck.git drm/i915: Only WARN about a stuck hotplug irq ONCE It seems that hardware that is broken enough to emit a hotplug IRQ even though the pin is surposedly disable, will do so indefinitely. Note: There's a good chance the underlying issue has been fixed with commit 0ce99f749b3834edeb500e17d6ad17e86b60ff83 Author: Daniel Vetter Date: Fri Jul 26 11:27:49 2013 +0200 drm/i915: fix gen4 digital port hotplug definitions References: https://bugzilla.redhat.com/show_bug.cgi?id=1051170 Link: https://bugzilla.redhat.com/attachment.cgi?id=847786 Signed-off-by: Chris Wilson [danvet: Add note about the potential fix.] Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index a9b0b181cb40..72453f1f7ae5 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1233,9 +1233,9 @@ static inline void intel_hpd_irq_handler(struct drm_device *dev, spin_lock(&dev_priv->irq_lock); for (i = 1; i < HPD_NUM_PINS; i++) { - WARN(((hpd[i] & hotplug_trigger) && - dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED), - "Received HPD interrupt although disabled\n"); + WARN_ONCE(hpd[i] & hotplug_trigger && + dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED, + "Received HPD interrupt although disabled\n"); if (!(hpd[i] & hotplug_trigger) || dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED)