This is a note to let you know that I've just added the patch titled
drm/i915: Ban Haswell from using RCS flips
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-ban-haswell-from-using-rcs-flips.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 48bf5b2d00bfeb681f6500c626189c7cd2c964d2 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date: Sat, 27 Dec 2014 09:48:28 +0000
Subject: drm/i915: Ban Haswell from using RCS flips
From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
commit 48bf5b2d00bfeb681f6500c626189c7cd2c964d2 upstream.
Like Ivybridge, we have reports that we get random hangs when flipping
with multiple pipes. Extend
commit 2a92d5bca1999b69c78f3c3e97b5484985b094b9
Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date: Tue Jul 8 10:40:29 2014 +0100
drm/i915: Disable RCS flips on Ivybridge
to also apply to Haswell.
Reported-and-tested-by: Scott Tsai <scottt.tw@xxxxxxxxx>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87759
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10019,7 +10019,7 @@ static int intel_crtc_page_flip(struct d
if (obj->tiling_mode != work->old_fb_obj->tiling_mode)
/* vlv: DISPLAY_FLIP fails to change tiling */
ring = NULL;
- } else if (IS_IVYBRIDGE(dev)) {
+ } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
ring = &dev_priv->ring[BCS];
} else if (INTEL_INFO(dev)->gen >= 7) {
ring = obj->ring;
Patches currently in stable-queue which might be from chris@xxxxxxxxxxxxxxxxxx are
queue-3.18/drm-i915-fix-mutex-owner-inspection-race-under-debug_mutexes.patch
queue-3.18/drm-i915-ban-haswell-from-using-rcs-flips.patch
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