Patch "drm/nouveau/mmu/nv4a: use nv04 mmu rather than the nv44 one" has been added to the 4.4-stable tree

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

drm/nouveau/mmu/nv4a: use nv04 mmu rather than the nv44 one

to the 4.4-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-nouveau-mmu-nv4a-use-nv04-mmu-rather-than-the-nv44-one.patch

and it can be found in the queue-4.4 subdirectory.

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

From: Ilia Mirkin <[email protected]>
Date: Sat, 18 Mar 2017 16:23:10 -0400
Subject: drm/nouveau/mmu/nv4a: use nv04 mmu rather than the nv44 one

From: Ilia Mirkin <[email protected]>

commit f94773b9f5ecd1df7c88c2e921924dd41d2020cc upstream.

The NV4A (aka NV44A) is an oddity in the family. It only comes in AGP and PCI varieties, rather than a core PCIE chip with a bridge for AGP/PCI as necessary. As a result, it appears that the MMU is also non-functional. For AGP cards, the vast majority of the NV4A lineup, this worked out since we force AGP cards to use the nv04 mmu. However for PCI variants, this did not work.

Switching to the NV04 MMU makes it work like a charm. Thanks to mwk for the suggestion. This should be a no-op for NV4A AGP boards, as they were using it already.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70388

---
 drivers/gpu/drm/nouveau/nvkm/engine/device/base.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -714,7 +714,7 @@ nv4a_chipset = {
 	.i2c = nv04_i2c_new,
 	.imem = nv40_instmem_new,
 	.mc = nv44_mc_new,
-	.mmu = nv44_mmu_new,
+	.mmu = nv04_mmu_new,
 	.pci = nv40_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,

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

queue-4.4/drm-nouveau-mpeg-mthd-returns-true-on-success-now.patch queue-4.4/drm-nouveau-mmu-nv4a-use-nv04-mmu-rather-than-the-nv44-one.patch