hwmon: (gpd-fan) Fix return value when platform_get_resource() fails

When platform_get_resource() fails it returns NULL and not an error
pointer, accordingly change the error handling.

Fixes: 0ab88e239439 ("hwmon: add GPD devices sensor driver")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Link: https://lore.kernel.org/r/20251010204359.94300-1-harshit.m.mogalapalli@oracle.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/gpd-fan.c b/drivers/hwmon/gpd-fan.c
index 644dc3ca9df7da0174e513c47a820a6ff39eb0ef..eebe39ef967775238e8ff5a2a4d223f2ee3e1339 100644 (file)
--- a/drivers/hwmon/gpd-fan.c
+++ b/drivers/hwmon/gpd-fan.c
@@ -615,8 +615,8 @@ static int gpd_fan_probe(struct platform_device *pdev)
        const struct device *hwdev;
 
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-       if (IS_ERR(res))
-               return dev_err_probe(dev, PTR_ERR(res),
+       if (!res)
+               return dev_err_probe(dev, -EINVAL,
                                     "Failed to get platform resource\n");
 
        region = devm_request_region(dev, res->start,