[PATCH 13/19] AMD IOMMU: add domain destroy function for IOMMU API

Joerg Roedel
2008-12-04T17:37:17Z

Impact: add a generic function for releasing protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kernel/amd_iommu.c | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 5d56cba..fd42926 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1511,3 +1511,21 @@ out_free:

return -ENOMEM;
}
+
+static void amd_iommu_domain_destroy(struct iommu_domain *dom)
+{
+ struct protection_domain *domain = dom->priv;
+
+ if (!domain)
+ return;
+
+ BUG_ON(domain->dev_cnt);
+
+ free_pagetable(domain);
+
+ domain_id_free(domain->id);
+
+ kfree(domain);
+
+ dom->priv = NULL;
+}
--
1.5.6.4