Merge branch 'linus' into cpus4096

[linux-2.6] / include / asm-m68knommu / bitops.h

diff --git a/include/asm-m68knommu/bitops.h b/include/asm-m68knommu/bitops.h
index f43afe1fc3b33940dc1c46178045830f4bf01b44..6f3685eab44c7f88818451d76599f934661a8785 100644 (file)
--- a/include/asm-m68knommu/bitops.h
+++ b/include/asm-m68knommu/bitops.h
@@ -14,8 +14,38 @@
 #error only <linux/bitops.h> can be included directly
 #endif
 
+#if defined (__mcfisaaplus__) || defined (__mcfisac__)
+static inline int ffs(unsigned int val)
+{
+        if (!val)
+                return 0;
+
+        asm volatile(
+                        "bitrev %0\n\t"
+                        "ff1 %0\n\t"
+                        : "=d" (val)
+                        : "0" (val)
+                   );
+        val++;
+        return val;
+}
+
+static inline int __ffs(unsigned int val)
+{
+        asm volatile(
+                        "bitrev %0\n\t"
+                        "ff1 %0\n\t"
+                        : "=d" (val)
+                        : "0" (val)
+                   );
+        return val;
+}
+
+#else
 #include <asm-generic/bitops/ffs.h>
 #include <asm-generic/bitops/__ffs.h>
+#endif
+
 #include <asm-generic/bitops/sched.h>
 #include <asm-generic/bitops/ffz.h>
 
@@ -262,7 +292,7 @@ static __inline__ unsigned long ext2_find_next_zero_bit(void *addr, unsigned lon
                 * tmp = __swab32(*(p++));
                 * tmp |= ~0UL >> (32-offset);
                 *
-                * but this would decrease preformance, so we change the
+                * but this would decrease performance, so we change the
                 * shift:
                 */
                tmp = *(p++);