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drm-intel-crtc-dpms-fix.patch: Fix system hang on gen2 kit on DPMS (#730853)

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This commit is contained in:
Adam Jackson 2012-03-02 12:22:53 -05:00
parent 766e8e89f6
commit a3e5ef0ac4
2 changed files with 45 additions and 0 deletions
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40
drm-intel-crtc-dpms-fix.patch Normal file
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@ -0,0 +1,40 @@
From aed3f09db39596e539f90b11a5016aea4d8442e1 Mon Sep 17 00:00:00 2001
From: Alban Browaeys <prahal@yahoo.com>
Date: Fri, 24 Feb 2012 17:12:45 +0000
Subject: [PATCH] drm/i915: Prevent a machine hang by checking crtc->active
before loading lut
Before loading the lut (gamma), check the active state of intel_crtc,
otherwise at least on gen2 hang ensue.
This is reproducible in Xorg via:
xset dpms force off
then
xgamma -rgamma 2.0 # freeze.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44505
Signed-off-by: Alban Browaeys <prahal@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@kernel.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
drivers/gpu/drm/i915/intel_display.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4871ba0..f851db7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6184,7 +6184,7 @@ void intel_crtc_load_lut(struct drm_crtc *crtc)
int i;
/* The clocks have to be on to load the palette. */
- if (!crtc->enabled)
+ if (!crtc->enabled || !intel_crtc->active)
return;
/* use legacy palette for Ironlake */
--
1.7.7.6

5
kernel.spec
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@ -705,6 +705,7 @@ Patch1800: drm-vgem.patch
# nouveau + drm fixes
# intel drm is all merged upstream
Patch1824: drm-intel-next.patch
Patch1825: drm-intel-crtc-dpms-fix.patch
Patch1900: linux-2.6-intel-iommu-igfx.patch
@ -1442,6 +1443,7 @@ ApplyPatch drm-vgem.patch
# Intel DRM
ApplyOptionalPatch drm-intel-next.patch
ApplyPatch drm-intel-crtc-dpms-fix.patch
ApplyPatch linux-2.6-intel-iommu-igfx.patch
@ -2380,6 +2382,9 @@ fi
# ||----w |
# || ||
%changelog
* Fri Mar 02 2012 Adam Jackson <ajax@redhat.com>
- drm-intel-crtc-dpms-fix.patch: Fix system hang on gen2 kit on DPMS (#730853)
* Thu Mar 01 2012 Dave Jones <davej@redhat.com>
- temporarily switch to low-performance polling IRQ mode when
unexpected IRQs occur.