From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 2 Dec 2008 17:34:12 +0000 (+0100)
Subject: AMD IOMMU: add domain destroy function for IOMMU API
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=98383fc301c6546af0f3a8a1d3cb8bf218f7e940;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

AMD IOMMU: add domain destroy function for IOMMU API

Impact: add a generic function for releasing protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 6c0bd49cee5f..891d713d9c96 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1636,4 +1636,25 @@ out_free:
 	return -ENOMEM;
 }
 
+static void amd_iommu_domain_destroy(struct iommu_domain *dom)
+{
+	struct protection_domain *domain = dom->priv;
+
+	if (!domain)
+		return;
+
+	if (domain->dev_cnt > 0)
+		cleanup_domain(domain);
+
+	BUG_ON(domain->dev_cnt != 0);
+
+	free_pagetable(domain);
+
+	domain_id_free(domain->id);
+
+	kfree(domain);
+
+	dom->priv = NULL;
+}
+
 #endif