linux-kernel - [PATCH v2 -next] swiotlb: drop pointless static qualifier in swiotlb_create

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Message-ID: <20190214090408.76071-1-yuehaibing@huawei.com>
Date:   Thu, 14 Feb 2019 09:04:08 +0000
From:   YueHaibing <yuehaibing@...wei.com>
To:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>
CC:     YueHaibing <yuehaibing@...wei.com>,
        <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: [PATCH v2 -next] swiotlb: drop pointless static qualifier in swiotlb_create_debugfs()

There is no need to have the 'struct dentry *d_swiotlb_usage' variable
static since new value always be assigned before use it.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
v2: fix patch title
---
 kernel/dma/swiotlb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index a7b53786db9f..02fa517c47d9 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -689,7 +689,7 @@ swiotlb_dma_supported(struct device *hwdev, u64 mask)
 
 static int __init swiotlb_create_debugfs(void)
 {
-	static struct dentry *d_swiotlb_usage;
+	struct dentry *d_swiotlb_usage;
 	struct dentry *ent;
 
 	d_swiotlb_usage = debugfs_create_dir("swiotlb", NULL);