msm: iommu: Don't read from write-only registers
Don't read from V2Pxx command registers when doing
iova-to-phys operations. These registers are write-only and
reading the value before modifying the VA bits is
unnecessary.
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
diff --git a/arch/arm/mach-msm/iommu.c b/arch/arm/mach-msm/iommu.c
index 0146f519..1a584e0 100644
--- a/arch/arm/mach-msm/iommu.c
+++ b/arch/arm/mach-msm/iommu.c
@@ -579,7 +579,7 @@
/* Invalidate context TLB */
SET_CTX_TLBIALL(base, ctx, 0);
- SET_V2PPR_VA(base, ctx, va >> V2Pxx_VA_SHIFT);
+ SET_V2PPR(base, ctx, va & V2Pxx_VA);
par = GET_PAR(base, ctx);