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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Luo Jie , 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 Message-ID: <20241117212827.13763-1-rosenp@gmail.com> X-Mailer: git-send-email 2.47.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org 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 --- 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);