linux-kernel - [PATCH] iommu/vt-d: return error code in domain_context_mapping

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Message-Id: <1468418001-19089-1-git-send-email-richard.weiyang@gmail.com>
Date:	Wed, 13 Jul 2016 13:53:21 +0000
From:	Wei Yang <richard.weiyang@...il.com>
To:	jroedel@...e.de, dwmw2@...radead.org
Cc:	joro@...tes.org, iommu@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, Wei Yang <richard.weiyang@...il.com>
Subject: [PATCH] iommu/vt-d: return error code in domain_context_mapping_one()

In 'commit <55d940430ab9> ("iommu/vt-d: Get rid of domain->iommu_lock")',
the error handling path is changed a little, which makes the function
always return 0.

This path fixes this.

Signed-off-by: Wei Yang <richard.weiyang@...il.com>
---
 drivers/iommu/intel-iommu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 323dac9..d416242 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2076,7 +2076,7 @@ out_unlock:
 	spin_unlock(&iommu->lock);
 	spin_unlock_irqrestore(&device_domain_lock, flags);
 
-	return 0;
+	return ret;
 }
 
 struct domain_context_mapping_data {
-- 
1.7.9.5