batman-adv: Use bool as return type for boolean functions

It is easier to understand that the returned value of a specific function
doesn't have to be 0 when the functions was successful when the actual
return type is bool. This is especially true when all surrounding functions
with return type int use negative values to return the error code.

Reported-by: Nicholas Krause <xerofoify@gmail.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>

1 files changed, 8 insertions, 7 deletions

diff --git a/net/batman-adv/bitarray.h b/net/batman-adv/bitarray.h
index 3e41bb80eb81..0e6e9d09078c 100644
--- a/net/batman-adv/bitarray.h
+++ b/net/batman-adv/bitarray.h
@@ -22,6 +22,7 @@
 
 #include <linux/bitops.h>
 #include <linux/compiler.h>
+#include <linux/stddef.h>
 #include <linux/types.h>
 
 /**
@@ -31,17 +32,17 @@
  * @last_seqno: latest sequence number in seq_bits
  * @curr_seqno: sequence number to test for
  *
- * Return: 1 if the corresponding bit in the given seq_bits indicates true
- * and curr_seqno is within range of last_seqno. Otherwise returns 0.
+ * Return: true if the corresponding bit in the given seq_bits indicates true
+ * and curr_seqno is within range of last_seqno. Otherwise returns false.
  */
-static inline int batadv_test_bit(const unsigned long *seq_bits,
-				  u32 last_seqno, u32 curr_seqno)
+static inline bool batadv_test_bit(const unsigned long *seq_bits,
+				   u32 last_seqno, u32 curr_seqno)
 {
 	s32 diff;
 
 	diff = last_seqno - curr_seqno;
 	if (diff < 0 || diff >= BATADV_TQ_LOCAL_WINDOW_SIZE)
-		return 0;
+		return false;
 	return test_bit(diff, seq_bits) != 0;
 }
 
@@ -55,7 +56,7 @@ static inline void batadv_set_bit(unsigned long *seq_bits, s32 n)
 	set_bit(n, seq_bits); /* turn the position on */
 }
 
-int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, s32 seq_num_diff,
-			  int set_mark);
+bool batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
+			   s32 seq_num_diff, int set_mark);
 
 #endif /* _NET_BATMAN_ADV_BITARRAY_H_ */