linux-kernel - [PATCH linux-next] octeontx2-af: Remove redundant assignment and parentheses

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Message-Id: <20211022095321.1065922-1-luo.penghao@zte.com.cn>
Date:   Fri, 22 Oct 2021 09:53:21 +0000
From:   luo penghao <cgel.zte@...il.com>
To:     SimonHorman <horms@...nel.org>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Stephen Hemminger <stephen@...workplumber.org>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        luo penghao <luo.penghao@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] octeontx2-af: Remove redundant assignment and parentheses

The variable err will be reassigned on subsequent branches, and this
assignment does not perform related value operations. This will cause
the double parentheses to be redundant, so the inner parentheses should
be deleted.

clang_analyzer complains as follows:

drivers/net/ethernet/marvell/sky2.c:4988: warning:

Although the value stored to 'err' is used in the enclosing expression,
the value is never actually read from 'err'.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: luo penghao <luo.penghao@....com.cn>
---
 drivers/net/ethernet/marvell/sky2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 8b8bff5..33558aa 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -4985,7 +4985,7 @@ static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	pci_set_master(pdev);
 
 	if (sizeof(dma_addr_t) > sizeof(u32) &&
-	    !(err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))) {
+	    !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
 		using_dac = 1;
 		err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
 		if (err < 0) {
-- 
2.15.2