mac_pton: Use bool not int return

Use bool instead of int as the return type.

All uses are tested with !.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/kernel.h

@@ -501,7 +501,7 @@ static inline char * __deprecated pack_hex_byte(char *buf, u8 byte)
 extern int hex_to_bin(char ch);
 extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
 
-int mac_pton(const char *s, u8 *mac);
+bool mac_pton(const char *s, u8 *mac);
 
 /*
  * General tracing related utility functions - trace_printk(),

lib/net_utils.c

@@ -3,24 +3,24 @@
 #include <linux/ctype.h>
 #include <linux/kernel.h>
 
-int mac_pton(const char *s, u8 *mac)
+bool mac_pton(const char *s, u8 *mac)
 {
 	int i;
 
 	/* XX:XX:XX:XX:XX:XX */
 	if (strlen(s) < 3 * ETH_ALEN - 1)
-		return 0;
+		return false;
 
 	/* Don't dirty result unless string is valid MAC. */
 	for (i = 0; i < ETH_ALEN; i++) {
 		if (!isxdigit(s[i * 3]) || !isxdigit(s[i * 3 + 1]))
-			return 0;
+			return false;
 		if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
-			return 0;
+			return false;
 	}
 	for (i = 0; i < ETH_ALEN; i++) {
 		mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
 	}
-	return 1;
+	return true;
 }
 EXPORT_SYMBOL(mac_pton);