linux-kernel - [PATCH net-next] net: xilinx: remove redundant null check before clk_disable

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Message-ID: <1599483723-43704-1-git-send-email-zhangchangzhong@huawei.com>
Date:   Mon, 7 Sep 2020 21:02:03 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     <radhey.shyam.pandey@...inx.com>, <davem@...emloft.net>,
        <kuba@...nel.org>, <michal.simek@...inx.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next] net: xilinx: remove redundant null check before clk_disable_unprepare()

Because clk_prepare_enable() and clk_disable_unprepare() already checked
NULL clock parameter, so the additional checks are unnecessary, just
remove them.

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index fa5dc299..9aafd3e 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -2038,8 +2038,7 @@ static int axienet_remove(struct platform_device *pdev)
 
 	axienet_mdio_teardown(lp);
 
-	if (lp->clk)
-		clk_disable_unprepare(lp->clk);
+	clk_disable_unprepare(lp->clk);
 
 	of_node_put(lp->phy_node);
 	lp->phy_node = NULL;
-- 
2.9.5