usb: common: Switch to device_property_match_property_string()

Replace open coded device_property_match_property_string().

Signed-off-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: andy-shev

drivers/usb/common/common.c

@@ -107,19 +107,18 @@ EXPORT_SYMBOL_GPL(usb_speed_string);
  */
 enum usb_device_speed usb_get_maximum_speed(struct device *dev)
 {
-	const char *maximum_speed;
+	const char *p = "maximum-speed";
 	int ret;
 
-	ret = device_property_read_string(dev, "maximum-speed", &maximum_speed);
-	if (ret < 0)
-		return USB_SPEED_UNKNOWN;
-
-	ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed);
+	ret = device_property_match_property_string(dev, p, ssp_rate, ARRAY_SIZE(ssp_rate));
 	if (ret > 0)
 		return USB_SPEED_SUPER_PLUS;
 
-	ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
-	return (ret < 0) ? USB_SPEED_UNKNOWN : ret;
+	ret = device_property_match_property_string(dev, p, speed_names, ARRAY_SIZE(speed_names));
+	if (ret > 0)
+		return ret;
+
+	return USB_SPEED_UNKNOWN;
 }
 EXPORT_SYMBOL_GPL(usb_get_maximum_speed);