6.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Rosen Penev <rosenp@xxxxxxxxx> [ Upstream commit 9cc8d0ecdd2aad42e377e971e3bb114339df609e ] If an optional resource is found but fails to remap, return on failure. Avoids any potential problems when using the iomapped resource as the assumption is that it's available. Fixes: 23a890d493e3 ("net: mdio: Add the reset function for IPQ MDIO driver") Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx> Reviewed-by: Andrew Lunn <andrew@xxxxxxx> Link: https://patch.msgid.link/20241121193152.8966-1-rosenp@xxxxxxxxx Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/net/mdio/mdio-ipq4019.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/mdio/mdio-ipq4019.c b/drivers/net/mdio/mdio-ipq4019.c index 9d8f43b28aac5..ea1f64596a85c 100644 --- a/drivers/net/mdio/mdio-ipq4019.c +++ b/drivers/net/mdio/mdio-ipq4019.c @@ -352,8 +352,11 @@ static int ipq4019_mdio_probe(struct platform_device *pdev) /* The platform resource is provided on the chipset IPQ5018 */ /* This resource is optional */ res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (res) + if (res) { priv->eth_ldo_rdy = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(priv->eth_ldo_rdy)) + return PTR_ERR(priv->eth_ldo_rdy); + } bus->name = "ipq4019_mdio"; bus->read = ipq4019_mdio_read_c22; -- 2.43.0