linux-kernel - [PATCH] iommu/amd: remove unused variable flush

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Date:   Sun, 22 Oct 2017 13:49:45 +0200
From:   Colin King <colin.king@...onical.com>
To:     Joerg Roedel <joro@...tes.org>, iommu@...ts.linux-foundation.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] iommu/amd: remove unused variable flush_addr

From: Colin Ian King <colin.king@...onical.com>

Variable flush_addr is being assigned but is never read; it
is redundant and can be removed. Cleans up the clang warning:

drivers/iommu/amd_iommu.c:2388:2: warning: Value stored to 'flush_addr'
is never read

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/iommu/amd_iommu.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 5a72f40d6532..a99d41fc3a1d 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2382,11 +2382,9 @@ static void __unmap_single(struct dma_ops_domain *dma_dom,
 			   size_t size,
 			   int dir)
 {
-	dma_addr_t flush_addr;
 	dma_addr_t i, start;
 	unsigned int pages;
 
-	flush_addr = dma_addr;
 	pages = iommu_num_pages(dma_addr, size, PAGE_SIZE);
 	dma_addr &= PAGE_MASK;
 	start = dma_addr;
-- 
2.14.1