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Patch "drm/i915: Disable decoupled MMIO" has been added to the 4.11-stable tree

PATCH [email protected] 1 participant 1 message Jun 15, 2017

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This is a note to let you know that I've just added the patch titled

drm/i915: Disable decoupled MMIO

to the 4.11-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-disable-decoupled-mmio.patch
and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 4c4c565513cca1c53a12956640b5915727431631 Mon Sep 17 00:00:00 2001

From: Kai Chen <[email protected]>
Date: Tue, 23 May 2017 14:58:11 -0700
Subject: drm/i915: Disable decoupled MMIO

From: Kai Chen <[email protected]>

commit 4c4c565513cca1c53a12956640b5915727431631 upstream.

The decoupled MMIO feature doesn't work as intended by HW team. Enabling it with forcewake will only make debugging efforts more difficult, so let's disable it.

Fixes 85ee17ebeedd ("drm/i915/bxt: Broxton decoupled MMIO")
Cc Zhe Wang <[email protected]>
Cc Praveen Paneri <[email protected]>
Cc Tvrtko Ursulin <[email protected]>
Cc Daniel Vetter <[email protected]>
Cc Jani Nikula <[email protected]>
(cherry picked from commit 0051c10acabb631cfd439eae73289e6e4c39b2b7)
---
 drivers/gpu/drm/i915/i915_pci.c |    1 -
 1 file changed, 1 deletion(-)
drivers/gpu/drm/i915/i915_pci.c +0 -1
@@ -389,7 +389,6 @@ static const struct intel_device_info in
 	.has_hw_contexts = 1, \
 	.has_logical_ring_contexts = 1, \
 	.has_guc = 1, \
-	.has_decoupled_mmio = 1, \
 	.has_aliasing_ppgtt = 1, \
 	.has_full_ppgtt = 1, \
 	.has_full_48bit_ppgtt = 1, \

Patches currently in stable-queue which might be from [email protected] are

queue-4.11/drm-i915-disable-decoupled-mmio.patch