linux-kernel - [PATCH 3.16 052/306] iommu/amd: Free domain id when free a domain of struct dma_ops

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Message-ID: <lsq.1487198500.74978570@decadent.org.uk>
Date:   Wed, 15 Feb 2017 22:41:40 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Baoquan He" <bhe@...hat.com>,
        "Joerg Roedel" <jroedel@...e.de>
Subject: [PATCH 3.16 052/306] iommu/amd: Free domain id when free a domain
 of struct dma_ops_domain

3.16.40-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Baoquan He <bhe@...hat.com>

commit c3db901c54466a9c135d1e6e95fec452e8a42666 upstream.

The current code missed freeing domain id when free a domain of
struct dma_ops_domain.

Signed-off-by: Baoquan He <bhe@...hat.com>
Fixes: ec487d1a110a ('x86, AMD IOMMU: add domain allocation and deallocation functions')
Signed-off-by: Joerg Roedel <jroedel@...e.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/iommu/amd_iommu.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2037,6 +2037,9 @@ static void dma_ops_domain_free(struct d
 		kfree(dom->aperture[i]);
 	}
 
+	if (dom->domain.id)
+		domain_id_free(dom->domain.id);
+
 	kfree(dom);
 }