diff --git a/arch/m68k/include/asm/bitops.h b/arch/m68k/include/asm/bitops.h
index 10133a968c8e..d2a9aa048517 100644
--- a/arch/m68k/include/asm/bitops.h
+++ b/arch/m68k/include/asm/bitops.h
@@ -314,12 +314,12 @@ static inline int bfchg_mem_test_and_change_bit(int nr,
 #include <asm-generic/bitops/ffz.h>
 #else
 
-static inline int find_first_zero_bit(const unsigned long *vaddr,
-				      unsigned size)
+static inline unsigned long find_first_zero_bit(const unsigned long *vaddr,
+						unsigned long size)
 {
 	const unsigned long *p = vaddr;
-	int res = 32;
-	unsigned int words;
+	unsigned long res = 32;
+	unsigned long words;
 	unsigned long num;
 
 	if (!size)
@@ -340,8 +340,9 @@ out:
 }
 #define find_first_zero_bit find_first_zero_bit
 
-static inline int find_next_zero_bit(const unsigned long *vaddr, int size,
-				     int offset)
+static inline unsigned long find_next_zero_bit(const unsigned long *vaddr,
+					       unsigned long size,
+					       unsigned long offset)
 {
 	const unsigned long *p = vaddr + (offset >> 5);
 	int bit = offset & 31UL, res;
@@ -370,11 +371,12 @@ static inline int find_next_zero_bit(const unsigned long *vaddr, int size,
 }
 #define find_next_zero_bit find_next_zero_bit
 
-static inline int find_first_bit(const unsigned long *vaddr, unsigned size)
+static inline unsigned long find_first_bit(const unsigned long *vaddr,
+					   unsigned long size)
 {
 	const unsigned long *p = vaddr;
-	int res = 32;
-	unsigned int words;
+	unsigned long res = 32;
+	unsigned long words;
 	unsigned long num;
 
 	if (!size)
@@ -395,8 +397,9 @@ out:
 }
 #define find_first_bit find_first_bit
 
-static inline int find_next_bit(const unsigned long *vaddr, int size,
-				int offset)
+static inline unsigned long find_next_bit(const unsigned long *vaddr,
+					  unsigned long size,
+					  unsigned long offset)
 {
 	const unsigned long *p = vaddr + (offset >> 5);
 	int bit = offset & 31UL, res;