1 files changed, 28 insertions, 15 deletions

diff --git a/include/asm-x86_64/bitops.h b/include/asm-x86_64/bitops.h
index a4d5d0909453..eb4df23e1e41 100644
--- a/include/asm-x86_64/bitops.h
+++ b/include/asm-x86_64/bitops.h
@@ -29,7 +29,7 @@ static __inline__ void set_bit(int nr, volatile void * addr)
 {
         __asm__ __volatile__( LOCK_PREFIX
                 "btsl %1,%0"
-                :"=m" (ADDR)
+                :"+m" (ADDR)
                 :"dIr" (nr) : "memory");
 }
 
@@ -46,7 +46,7 @@ static __inline__ void __set_bit(int nr, volatile void * addr)
 {
         __asm__ volatile(
                 "btsl %1,%0"
-                :"=m" (ADDR)
+                :"+m" (ADDR)
                 :"dIr" (nr) : "memory");
 }
 
@@ -64,7 +64,7 @@ static __inline__ void clear_bit(int nr, volatile void * addr)
 {
         __asm__ __volatile__( LOCK_PREFIX
                 "btrl %1,%0"
-                :"=m" (ADDR)
+                :"+m" (ADDR)
                 :"dIr" (nr));
 }
 
@@ -72,7 +72,7 @@ static __inline__ void __clear_bit(int nr, volatile void * addr)
 {
         __asm__ __volatile__(
                 "btrl %1,%0"
-                :"=m" (ADDR)
+                :"+m" (ADDR)
                 :"dIr" (nr));
 }
 
@@ -92,7 +92,7 @@ static __inline__ void __change_bit(int nr, volatile void * addr)
 {
         __asm__ __volatile__(
                 "btcl %1,%0"
-                :"=m" (ADDR)
+                :"+m" (ADDR)
                 :"dIr" (nr));
 }
 
@@ -109,7 +109,7 @@ static __inline__ void change_bit(int nr, volatile void * addr)
 {
         __asm__ __volatile__( LOCK_PREFIX
                 "btcl %1,%0"
-                :"=m" (ADDR)
+                :"+m" (ADDR)
                 :"dIr" (nr));
 }
 
@@ -127,7 +127,7 @@ static __inline__ int test_and_set_bit(int nr, volatile void * addr)
 
         __asm__ __volatile__( LOCK_PREFIX
                 "btsl %2,%1\n\tsbbl %0,%0"
-                :"=r" (oldbit),"=m" (ADDR)
+                :"=r" (oldbit),"+m" (ADDR)
                 :"dIr" (nr) : "memory");
         return oldbit;
 }
@@ -147,7 +147,7 @@ static __inline__ int __test_and_set_bit(int nr, volatile void * addr)
 
         __asm__(
                 "btsl %2,%1\n\tsbbl %0,%0"
-                :"=r" (oldbit),"=m" (ADDR)
+                :"=r" (oldbit),"+m" (ADDR)
                 :"dIr" (nr));
         return oldbit;
 }
@@ -166,7 +166,7 @@ static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
 
         __asm__ __volatile__( LOCK_PREFIX
                 "btrl %2,%1\n\tsbbl %0,%0"
-                :"=r" (oldbit),"=m" (ADDR)
+                :"=r" (oldbit),"+m" (ADDR)
                 :"dIr" (nr) : "memory");
         return oldbit;
 }
@@ -186,7 +186,7 @@ static __inline__ int __test_and_clear_bit(int nr, volatile void * addr)
 
         __asm__(
                 "btrl %2,%1\n\tsbbl %0,%0"
-                :"=r" (oldbit),"=m" (ADDR)
+                :"=r" (oldbit),"+m" (ADDR)
                 :"dIr" (nr));
         return oldbit;
 }
@@ -198,7 +198,7 @@ static __inline__ int __test_and_change_bit(int nr, volatile void * addr)
 
         __asm__ __volatile__(
                 "btcl %2,%1\n\tsbbl %0,%0"
-                :"=r" (oldbit),"=m" (ADDR)
+                :"=r" (oldbit),"+m" (ADDR)
                 :"dIr" (nr) : "memory");
         return oldbit;
 }
@@ -217,7 +217,7 @@ static __inline__ int test_and_change_bit(int nr, volatile void * addr)
 
         __asm__ __volatile__( LOCK_PREFIX
                 "btcl %2,%1\n\tsbbl %0,%0"
-                :"=r" (oldbit),"=m" (ADDR)
+                :"=r" (oldbit),"+m" (ADDR)
                 :"dIr" (nr) : "memory");
         return oldbit;
 }
@@ -397,6 +397,22 @@ static __inline__ int fls64(__u64 x)
 }
 
 /**
+ * fls - find last bit set
+ * @x: the word to search
+ *
+ * This is defined the same way as ffs.
+ */
+static __inline__ int fls(int x)
+{
+        int r;
+
+        __asm__("bsrl %1,%0\n\t"
+                "cmovzl %2,%0"
+                : "=&r" (r) : "rm" (x), "rm" (-1));
+        return r+1;
+}
+
+/**
  * hweightN - returns the hamming weight of a N-bit word
  * @x: the word to weigh
  *
@@ -434,9 +450,6 @@ static __inline__ int fls64(__u64 x)
 #define minix_find_first_zero_bit(addr,size) \
         find_first_zero_bit((void*)addr,size)
 
-/* find last set bit */
-#define fls(x) generic_fls(x)
-
 #endif /* __KERNEL__ */
 
 #endif /* _X86_64_BITOPS_H */