linux-kernel - [PATCH] iommu/arm-smmu: remove redundant assignment to variable res

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Date:   Fri, 25 Feb 2022 09:32:05 +0000
From:   Colin Ian King <colin.i.king@...il.com>
To:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: [PATCH] iommu/arm-smmu: remove redundant assignment to variable res

The variable res is being assigned a value that isn't being read
later. The assignment is redundant and can be removed.

Cleans up clang scan warning:
drivers/iommu/arm/arm-smmu/arm-smmu.c:2109:10: warning: Although the
value stored to 'res' is used in the enclosing expression, the value
is never actually read from 'res' [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 drivers/iommu/arm/arm-smmu/arm-smmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 4bc75c4ce402..f83d2c32b5a9 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -2106,7 +2106,7 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
 		return PTR_ERR(smmu);
 
 	num_irqs = 0;
-	while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, num_irqs))) {
+	while (platform_get_resource(pdev, IORESOURCE_IRQ, num_irqs)) {
 		num_irqs++;
 		if (num_irqs > smmu->num_global_irqs)
 			smmu->num_context_irqs++;
-- 
2.34.1