[PATCH v16 15/20] iommu/arm-smmu: Constify some helpers

Rob Clark
2020-09-01T16:48:30Z

From: Rob Clark <robdclark@chromium.org>

Sprinkle a few `const`s where helpers don't need write access.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
drivers/iommu/arm/arm-smmu/arm-smmu.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h
index 59ff3fc5c6c8..27c83333fc50 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.h
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h
@@ -377,7 +377,7 @@ struct arm_smmu_master_cfg {
s16 smendx[];
};

-static inline u32 arm_smmu_lpae_tcr(struct io_pgtable_cfg *cfg)
+static inline u32 arm_smmu_lpae_tcr(const struct io_pgtable_cfg *cfg)
{
u32 tcr = FIELD_PREP(ARM_SMMU_TCR_TG0, cfg->arm_lpae_s1_cfg.tcr.tg) |
FIELD_PREP(ARM_SMMU_TCR_SH0, cfg->arm_lpae_s1_cfg.tcr.sh) |
@@ -398,13 +398,13 @@ static inline u32 arm_smmu_lpae_tcr(struct io_pgtable_cfg *cfg)
return tcr;
}

-static inline u32 arm_smmu_lpae_tcr2(struct io_pgtable_cfg *cfg)
+static inline u32 arm_smmu_lpae_tcr2(const struct io_pgtable_cfg *cfg)
{
return FIELD_PREP(ARM_SMMU_TCR2_PASIZE, cfg->arm_lpae_s1_cfg.tcr.ips) |
FIELD_PREP(ARM_SMMU_TCR2_SEP, ARM_SMMU_TCR2_SEP_UPSTREAM);
}

-static inline u32 arm_smmu_lpae_vtcr(struct io_pgtable_cfg *cfg)
+static inline u32 arm_smmu_lpae_vtcr(const struct io_pgtable_cfg *cfg)
{
return ARM_SMMU_VTCR_RES1 |
FIELD_PREP(ARM_SMMU_VTCR_PS, cfg->arm_lpae_s2_cfg.vtcr.ps) |
--
2.26.2