diff options
Diffstat (limited to 'drivers/iommu/tegra-smmu.c')
| -rw-r--r-- | drivers/iommu/tegra-smmu.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 0b74e17794b1..f51fe9b48bb7 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -351,6 +351,20 @@ static void tegra_smmu_enable(struct tegra_smmu *smmu, unsigned int swgroup, unsigned int i; u32 value; + group = tegra_smmu_find_swgroup(smmu, swgroup); + if (group) { + value = smmu_readl(smmu, group->reg); + value &= ~SMMU_ASID_MASK; + value |= SMMU_ASID_VALUE(asid); + value |= SMMU_ASID_ENABLE; + smmu_writel(smmu, value, group->reg); + } else { + pr_warn("%s group from swgroup %u not found\n", __func__, + swgroup); + /* No point moving ahead if group was not found */ + return; + } + for (i = 0; i < smmu->soc->num_clients; i++) { const struct tegra_mc_client *client = &smmu->soc->clients[i]; @@ -361,15 +375,6 @@ static void tegra_smmu_enable(struct tegra_smmu *smmu, unsigned int swgroup, value |= BIT(client->smmu.bit); smmu_writel(smmu, value, client->smmu.reg); } - - group = tegra_smmu_find_swgroup(smmu, swgroup); - if (group) { - value = smmu_readl(smmu, group->reg); - value &= ~SMMU_ASID_MASK; - value |= SMMU_ASID_VALUE(asid); - value |= SMMU_ASID_ENABLE; - smmu_writel(smmu, value, group->reg); - } } static void tegra_smmu_disable(struct tegra_smmu *smmu, unsigned int swgroup, |