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    Subject[PATCH v17 15/20] iommu/arm-smmu: Constify some helpers
    Date
    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 9aaacc906597..1a746476927c 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
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