1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-generic/bitops/builtin-__fls.h b/include/asm-generic/bitops/builtin-__fls.h
index 0248f386635f..7770c4f1bfcd 100644
--- a/include/asm-generic/bitops/builtin-__fls.h
+++ b/include/asm-generic/bitops/builtin-__fls.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_GENERIC_BITOPS_BUILTIN___FLS_H_
 #define _ASM_GENERIC_BITOPS_BUILTIN___FLS_H_
 
@@ -7,7 +8,7 @@
  *
  * Undefined if no set bit exists, so code should check against 0 first.
  */
-static __always_inline unsigned long __fls(unsigned long word)
+static __always_inline __attribute_const__ unsigned int __fls(unsigned long word)
 {
 	return (sizeof(word) * 8) - 1 - __builtin_clzl(word);
 }