linux-kernel - [PATCH] net: phy: fix error check return value of phy

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Message-Id: <20220419014439.2561835-1-lv.ruyi@zte.com.cn>
Date:   Tue, 19 Apr 2022 01:44:39 +0000
From:   cgel.zte@...il.com
To:     f.fainelli@...il.com, bcm-kernel-feedback-list@...adcom.com,
        andrew@...n.ch
Cc:     hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
        kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Lv Ruyi <lv.ruyi@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH] net: phy: fix error check return value of phy_read()

From: Lv Ruyi <lv.ruyi@....com.cn>

phy_read() returns a negative number if there's an error, but the
error-checking code in the bcm87xx driver's config_intr function
triggers if phy_read() returns non-zero.  Correct that.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@....com.cn>
---
 drivers/net/phy/bcm87xx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/phy/bcm87xx.c b/drivers/net/phy/bcm87xx.c
index 313563482690..e62b53718010 100644
--- a/drivers/net/phy/bcm87xx.c
+++ b/drivers/net/phy/bcm87xx.c
@@ -146,7 +146,7 @@ static int bcm87xx_config_intr(struct phy_device *phydev)
 
 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
 		err = phy_read(phydev, BCM87XX_LASI_STATUS);
-		if (err)
+		if (err < 0)
 			return err;
 
 		reg |= 1;
-- 
2.25.1