net: sfp: use hwmon_sanitize_name()

Instead of open-coding the bad characters replacement in the hwmon name,
use the new hwmon_sanitize_name().
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/phy/sfp.c

@@ -1290,7 +1290,7 @@ static const struct hwmon_chip_info sfp_hwmon_chip_info = {
 static void sfp_hwmon_probe(struct work_struct *work)
 {
 	struct sfp *sfp = container_of(work, struct sfp, hwmon_probe.work);
-	int err, i;
+	int err;
 
 	/* hwmon interface needs to access 16bit registers in atomic way to
 	 * guarantee coherency of the diagnostic monitoring data. If it is not
@@ -1318,16 +1318,12 @@ static void sfp_hwmon_probe(struct work_struct *work)
 		return;
 	}
 
-	sfp->hwmon_name = kstrdup(dev_name(sfp->dev), GFP_KERNEL);
-	if (!sfp->hwmon_name) {
+	sfp->hwmon_name = hwmon_sanitize_name(dev_name(sfp->dev));
+	if (IS_ERR(sfp->hwmon_name)) {
 		dev_err(sfp->dev, "out of memory for hwmon name\n");
 		return;
 	}
 
-	for (i = 0; sfp->hwmon_name[i]; i++)
-		if (hwmon_is_bad_char(sfp->hwmon_name[i]))
-			sfp->hwmon_name[i] = '_';
-
 	sfp->hwmon_dev = hwmon_device_register_with_info(sfp->dev,
 							 sfp->hwmon_name, sfp,
 							 &sfp_hwmon_chip_info,