From: Rosen Penev <rosenp@gmail.com>
To: netdev@vger.kernel.org
Cc: Andrew Lunn <andrew@lunn.ch>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Luo Jie <quic_luoj@quicinc.com>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH net] net: mdio-ipq4019: fix wrong NULL check
Date: Sun, 17 Nov 2024 13:28:27 -0800 [thread overview]
Message-ID: <20241117212827.13763-1-rosenp@gmail.com> (raw)
devm_ioremap_resource returns a PTR_ERR when it fails, not NULL. OTOH
this is conditionally set to either a PTR_ERR or a valid pointer. Use
!IS_ERR_OR_NULL to check if we can use this.
Fixes: 23a890d493 ("net: mdio: Add the reset function for IPQ MDIO driver")
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
drivers/net/mdio/mdio-ipq4019.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/mdio/mdio-ipq4019.c b/drivers/net/mdio/mdio-ipq4019.c
index dd3ed2d6430b..859302b0d38c 100644
--- a/drivers/net/mdio/mdio-ipq4019.c
+++ b/drivers/net/mdio/mdio-ipq4019.c
@@ -256,7 +256,7 @@ static int ipq_mdio_reset(struct mii_bus *bus)
/* To indicate CMN_PLL that ethernet_ldo has been ready if platform resource 1
* is specified in the device tree.
*/
- if (priv->eth_ldo_rdy) {
+ if (!IS_ERR_OR_NULL(priv->eth_ldo_rdy)) {
val = readl(priv->eth_ldo_rdy);
val |= BIT(0);
writel(val, priv->eth_ldo_rdy);
--
2.47.0
next reply other threads:[~2024-11-17 21:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-17 21:28 Rosen Penev [this message]
2024-11-18 10:26 ` [PATCH net] net: mdio-ipq4019: fix wrong NULL check Jie Luo
2024-11-18 11:27 ` Russell King (Oracle)
2024-11-18 21:12 ` Rosen Penev
2024-11-19 10:54 ` Jie Luo
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