Patch "iommu/arm-smmu: fix programming of SMMU_CBn_TCR for stage 1" has been added to the 3.14-stable tree

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

    iommu/arm-smmu: fix programming of SMMU_CBn_TCR for stage 1

to the 3.14-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:
     iommu-arm-smmu-fix-programming-of-smmu_cbn_tcr-for-stage-1.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 1fc870c7efa364862c3bc792cfbdb38afea26742 Mon Sep 17 00:00:00 2001
From: Olav Haugan <ohaugan@xxxxxxxxxxxxxx>
Date: Mon, 4 Aug 2014 19:01:02 +0100
Subject: iommu/arm-smmu: fix programming of SMMU_CBn_TCR for stage 1

From: Olav Haugan <ohaugan@xxxxxxxxxxxxxx>

commit 1fc870c7efa364862c3bc792cfbdb38afea26742 upstream.

Stage-1 context banks do not have the SMMU_CBn_TCR[SL0] field since it
is only applicable to stage-2 context banks.

This patch ensures that we don't set the reserved TCR bits for stage-1
translations.

Signed-off-by: Olav Haugan <ohaugan@xxxxxxxxxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/iommu/arm-smmu.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -794,8 +794,11 @@ static void arm_smmu_init_context_bank(s
 	reg |= TTBCR_EAE |
 	      (TTBCR_SH_IS << TTBCR_SH0_SHIFT) |
 	      (TTBCR_RGN_WBWA << TTBCR_ORGN0_SHIFT) |
-	      (TTBCR_RGN_WBWA << TTBCR_IRGN0_SHIFT) |
-	      (TTBCR_SL0_LVL_1 << TTBCR_SL0_SHIFT);
+	      (TTBCR_RGN_WBWA << TTBCR_IRGN0_SHIFT);
+
+	if (!stage1)
+		reg |= (TTBCR_SL0_LVL_1 << TTBCR_SL0_SHIFT);
+
 	writel_relaxed(reg, cb_base + ARM_SMMU_CB_TTBCR);
 
 	/* MAIR0 (stage-1 only) */


Patches currently in stable-queue which might be from ohaugan@xxxxxxxxxxxxxx are

queue-3.14/iommu-arm-smmu-fix-programming-of-smmu_cbn_tcr-for-stage-1.patch
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