From mboxrd@z Thu Jan 1 00:00:00 1970 From: mitchelh@codeaurora.org (Mitchel Humpherys) Date: Wed, 6 Jul 2016 16:51:36 -0700 Subject: [PATCH 3/3] Revert "iommu/arm-smmu: Treat all device transactions as unprivileged" In-Reply-To: <20160706235136.27854-1-mitchelh@codeaurora.org> References: <20160706235136.27854-1-mitchelh@codeaurora.org> Message-ID: <20160706235136.27854-4-mitchelh@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This reverts commit (d346180e70b91b3d: "iommu/arm-smmu: Treat all device transactions as unprivileged") since some platforms actually make use of privileged transactions. Signed-off-by: Mitchel Humpherys --- drivers/iommu/arm-smmu.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 9345a3fcb706..d0627ef26b05 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -178,9 +178,6 @@ #define S2CR_TYPE_BYPASS (1 << S2CR_TYPE_SHIFT) #define S2CR_TYPE_FAULT (2 << S2CR_TYPE_SHIFT) -#define S2CR_PRIVCFG_SHIFT 24 -#define S2CR_PRIVCFG_UNPRIV (2 << S2CR_PRIVCFG_SHIFT) - /* Context bank attribute registers */ #define ARM_SMMU_GR1_CBAR(n) (0x0 + ((n) << 2)) #define CBAR_VMID_SHIFT 0 @@ -1175,7 +1172,7 @@ static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain, u32 idx, s2cr; idx = cfg->smrs ? cfg->smrs[i].idx : cfg->streamids[i]; - s2cr = S2CR_TYPE_TRANS | S2CR_PRIVCFG_UNPRIV | + s2cr = S2CR_TYPE_TRANS | (smmu_domain->cfg.cbndx << S2CR_CBNDX_SHIFT); writel_relaxed(s2cr, gr0_base + ARM_SMMU_GR0_S2CR(idx)); } -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project