rfkill: Add constant for RFKILL_TYPE_FM radio devices

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Janakiram Sistla <janakiram.sistla@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/linux/rfkill.h

@@ -36,6 +36,7 @@
  * @RFKILL_TYPE_WIMAX: switch is on a WiMAX device.
  * @RFKILL_TYPE_WWAN: switch is on a wireless WAN device.
  * @RFKILL_TYPE_GPS: switch is on a GPS device.
+ * @RFKILL_TYPE_FM: switch is on a FM radio device.
  * @NUM_RFKILL_TYPES: number of defined rfkill types
  */
 enum rfkill_type {
@@ -46,6 +47,7 @@ enum rfkill_type {
 	RFKILL_TYPE_WIMAX,
 	RFKILL_TYPE_WWAN,
 	RFKILL_TYPE_GPS,
+	RFKILL_TYPE_FM,
 	NUM_RFKILL_TYPES,
 };
 

net/rfkill/core.c

@@ -592,11 +592,13 @@ static const char *rfkill_get_type_str(enum rfkill_type type)
 		return "wwan";
 	case RFKILL_TYPE_GPS:
 		return "gps";
+	case RFKILL_TYPE_FM:
+		return "fm";
 	default:
 		BUG();
 	}
 
-	BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_GPS + 1);
+	BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_FM + 1);
 }
 
 static ssize_t rfkill_type_show(struct device *dev,