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From 951660dcf5d09f7040ab1d56817ae952a1076978 Mon Sep 17 00:00:00 2001
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From: Jani Nikula <jani.nikula@intel.com>
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Date: Thu, 7 Jan 2016 10:29:10 +0200
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Subject: [PATCH] drm/i915: shut up gen8+ SDE irq dmesg noise, again
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We still keep getting
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[ 4.249930] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
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This reverts
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commit 820da7ae46332fa709b171eb7ba57cbd023fa6df
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Author: Jani Nikula <jani.nikula@intel.com>
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Date: Wed Nov 25 16:47:23 2015 +0200
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Revert "drm/i915: shut up gen8+ SDE irq dmesg noise"
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which in itself is a revert, so this is just doing
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commit 97e5ed1111dcc5300a0f59a55248cd243937a8ab
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Author: Daniel Vetter <daniel.vetter@ffwll.ch>
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Date: Fri Oct 23 10:56:12 2015 +0200
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drm/i915: shut up gen8+ SDE irq dmesg noise
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all over again. I'll stop pretending I understand what's going on like I
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did when I thought I'd fixed this for good in
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commit 6a39d7c986be4fd18eb019e9cdbf774ec36c9f77
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Author: Jani Nikula <jani.nikula@intel.com>
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Date: Wed Nov 25 16:47:22 2015 +0200
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drm/i915: fix the SDE irq dmesg warnings properly
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Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
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Reference: http://mid.gmane.org/20151213124945.GA5715@nuc-i3427.alporthouse.com
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Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92084
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Cc: drm-intel-fixes@lists.freedesktop.org
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Fixes: 820da7ae4633 ("Revert "drm/i915: shut up gen8+ SDE irq dmesg noise"")
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Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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[Backported to 4.3.y by Josh Boyer <jwboyer@fedoraproject.org>]
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---
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drivers/gpu/drm/i915/i915_irq.c | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
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index 39d73dbc1c47..fa7f82d54762 100644
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--- a/drivers/gpu/drm/i915/i915_irq.c
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+++ b/drivers/gpu/drm/i915/i915_irq.c
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@@ -2168,8 +2168,13 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
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I915_WRITE(SDEIIR, pch_iir);
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ret = IRQ_HANDLED;
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cpt_irq_handler(dev, pch_iir);
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- } else
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- DRM_ERROR("The master control interrupt lied (SDE)!\n");
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+ } else {
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+ /*
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+ * Like on previous PCH there seems to be something
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+ * fishy going on with forwarding PCH interrupts.
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+ */
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+ DRM_DEBUG_DRIVER("The master control interrupt lied (SDE)!\n");
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+ }
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}
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--
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2.5.0
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