diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/tegra-smmu.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index e6d142458950..0becdbfea306 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -23,6 +23,7 @@ struct tegra_smmu_group { struct tegra_smmu *smmu; const struct tegra_smmu_group_soc *soc; struct iommu_group *group; + unsigned int swgroup; }; struct tegra_smmu { @@ -909,14 +910,14 @@ static struct iommu_group *tegra_smmu_group_get(struct tegra_smmu *smmu, struct tegra_smmu_group *group; struct iommu_group *grp; + /* Find group_soc associating with swgroup */ soc = tegra_smmu_find_group(smmu, swgroup); - if (!soc) - return NULL; mutex_lock(&smmu->lock); + /* Find existing iommu_group associating with swgroup or group_soc */ list_for_each_entry(group, &smmu->groups, list) - if (group->soc == soc) { + if ((group->swgroup == swgroup) || (soc && group->soc == soc)) { grp = iommu_group_ref_get(group->group); mutex_unlock(&smmu->lock); return grp; @@ -929,6 +930,7 @@ static struct iommu_group *tegra_smmu_group_get(struct tegra_smmu *smmu, } INIT_LIST_HEAD(&group->list); + group->swgroup = swgroup; group->smmu = smmu; group->soc = soc; @@ -940,7 +942,8 @@ static struct iommu_group *tegra_smmu_group_get(struct tegra_smmu *smmu, } iommu_group_set_iommudata(group->group, group, tegra_smmu_group_release); - iommu_group_set_name(group->group, soc->name); + if (soc) + iommu_group_set_name(group->group, soc->name); list_add_tail(&group->list, &smmu->groups); mutex_unlock(&smmu->lock); |