linux-kernel - [PATCH 3/5] iommu/omap: Set dev->archdata.iommu = NULL in omap_iommu_remove

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Message-Id: <1490962248-12602-4-git-send-email-joro@8bytes.org>
Date:   Fri, 31 Mar 2017 14:10:46 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Suman Anna <s-anna@...com>, iommu@...ts.linux-foundation.org
Cc:     linux-kernel@...r.kernel.org, Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 3/5] iommu/omap: Set dev->archdata.iommu = NULL in omap_iommu_remove_device

From: Joerg Roedel <jroedel@...e.de>

Don't leave a stale pointer in case the device continues to
exist for some more time.

Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/omap-iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 45df5c8..04b3718 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -1252,6 +1252,7 @@ static void omap_iommu_remove_device(struct device *dev)
 	if (!dev->of_node || !arch_data)
 		return;
 
+	dev->archdata.iommu = NULL;
 	kfree(arch_data);
 }
 
-- 
1.9.1