From: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Cc: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>,
jroedel-l3A5Bk7waGM@public.gmane.org
Subject: [PATCH 3/6] of: iommu: Increment DT node refcount in of_iommu_set_ops()
Date: Fri, 19 Feb 2016 17:46:40 +0000 [thread overview]
Message-ID: <1455904003-28069-4-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1455904003-28069-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
From: Anup Patel <anup.patel-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
We are saving pointer to iommu DT node in of_iommu_set_ops()
hence we should increment DT node ref count.
Reviewed-by: Ray Jui <rjui-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Reviewed-by: Scott Branden <sbranden-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Reviewed-by: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
Signed-off-by: Anup Patel <anup.patel-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Signed-off-by: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
---
drivers/iommu/of_iommu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 60ba238090d9..5fea665af99d 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -110,6 +110,7 @@ void of_iommu_set_ops(struct device_node *np, struct iommu_ops *ops)
if (WARN_ON(!iommu))
return;
+ of_node_get(np);
INIT_LIST_HEAD(&iommu->list);
iommu->np = np;
iommu->ops = ops;
--
2.1.4
next prev parent reply other threads:[~2016-02-19 17:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-19 17:46 [PATCH 0/6] iommu/arm-smmu: Current patch queue for 4.6 Will Deacon
[not found] ` <1455904003-28069-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2016-02-19 17:46 ` [PATCH 1/6] iommu/arm-smmu: Treat all device transactions as unprivileged Will Deacon
2016-02-19 17:46 ` [PATCH 2/6] iommu/arm-smmu: Support DMA-API domains Will Deacon
2016-02-19 17:46 ` Will Deacon [this message]
2016-02-19 17:46 ` [PATCH 4/6] iommu/arm-smmu: Allow disabling unmatched stream bypass Will Deacon
2016-02-19 17:46 ` [PATCH 5/6] iommu/arm-smmu: Don't fail device attach if already attached to a domain Will Deacon
2016-02-19 17:46 ` [PATCH 6/6] iommu/arm-smmu: Treat IOMMU_DOMAIN_DMA as bypass for now Will Deacon
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