linux-kernel - [PATCH 1/1] iommu: to avoid an unnecessary assignment

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Message-ID: <1486114502-10984-1-git-send-email-thunder.leizhen@huawei.com>
Date:   Fri, 3 Feb 2017 17:35:02 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Joerg Roedel <joro@...tes.org>,
        iommu <iommu@...ts.linux-foundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
CC:     Zefan Li <lizefan@...wei.com>, Xinwei Hu <huxinwei@...wei.com>,
        "Tianhong Ding" <dingtianhong@...wei.com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH 1/1] iommu: to avoid an unnecessary assignment

Move the assignment statement into if branch above, where it only
needs to be.

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 drivers/iommu/iommu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index dbe7f65..b231400 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1714,13 +1714,14 @@ int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids)
 		fwspec = krealloc(dev->iommu_fwspec, size, GFP_KERNEL);
 		if (!fwspec)
 			return -ENOMEM;
+
+		dev->iommu_fwspec = fwspec;
 	}

 	for (i = 0; i < num_ids; i++)
 		fwspec->ids[fwspec->num_ids + i] = ids[i];

 	fwspec->num_ids += num_ids;
-	dev->iommu_fwspec = fwspec;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(iommu_fwspec_add_ids);
--
2.5.0