diff options
Diffstat (limited to 'arch/powerpc/kernel/iommu.c')
| -rw-r--r-- | arch/powerpc/kernel/iommu.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 719f0485ec79..be258b2ecb10 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -1078,6 +1078,7 @@ EXPORT_SYMBOL_GPL(iommu_release_ownership); int iommu_add_device(struct device *dev) { struct iommu_table *tbl; + struct iommu_table_group_link *tgl; /* * The sysfs entries should be populated before @@ -1095,15 +1096,22 @@ int iommu_add_device(struct device *dev) } tbl = get_iommu_table_base(dev); - if (!tbl || !tbl->it_table_group || !tbl->it_table_group->group) { + if (!tbl) { pr_debug("%s: Skipping device %s with no tbl\n", __func__, dev_name(dev)); return 0; } + tgl = list_first_entry_or_null(&tbl->it_group_list, + struct iommu_table_group_link, next); + if (!tgl) { + pr_debug("%s: Skipping device %s with no group\n", + __func__, dev_name(dev)); + return 0; + } pr_debug("%s: Adding %s to iommu group %d\n", __func__, dev_name(dev), - iommu_group_id(tbl->it_table_group->group)); + iommu_group_id(tgl->table_group->group)); if (PAGE_SIZE < IOMMU_PAGE_SIZE(tbl)) { pr_err("%s: Invalid IOMMU page size %lx (%lx) on %s\n", @@ -1112,7 +1120,7 @@ int iommu_add_device(struct device *dev) return -EINVAL; } - return iommu_group_add_device(tbl->it_table_group->group, dev); + return iommu_group_add_device(tgl->table_group->group, dev); } EXPORT_SYMBOL_GPL(iommu_add_device); |