linux-kernel - [PATCH] usb: phy: remove redundant store to variable var after & operation

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Message-Id: <20220715225657.353828-1-colin.i.king@gmail.com>
Date:   Fri, 15 Jul 2022 23:56:57 +0100
From:   Colin Ian King <colin.i.king@...il.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] usb: phy: remove redundant store to variable var after & operation

There is no need to store the result of the & operation back to the
variable var. The store is redundant, replace &= with just &.

Cleans up clang scan warning:
drivers/usb/phy/phy-keystone.c:62:5: warning: Although the value stored to
'val' is used in the enclosing expression, the value is never actually read
from 'val' [deadcode.DeadStores]

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

diff --git a/drivers/usb/phy/phy-keystone.c b/drivers/usb/phy/phy-keystone.c
index 358d05cb643d..f75912279b39 100644
--- a/drivers/usb/phy/phy-keystone.c
+++ b/drivers/usb/phy/phy-keystone.c
@@ -59,7 +59,7 @@ static void keystone_usbphy_shutdown(struct usb_phy *phy)
 
 	val  = keystone_usbphy_readl(k_phy->phy_ctrl, USB_PHY_CTL_CLOCK);
 	keystone_usbphy_writel(k_phy->phy_ctrl, USB_PHY_CTL_CLOCK,
-				val &= ~PHY_REF_SSP_EN);
+				val & ~PHY_REF_SSP_EN);
 }
 
 static int keystone_usbphy_probe(struct platform_device *pdev)
-- 
2.35.3