There is legacy 'extern' keyword for the exported simple_strtox()
function which are the artefact that can be removed. So drop it.

While at it, tweak the declaration to provide parameter names.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 include/linux/kstrtox.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/kstrtox.h b/include/linux/kstrtox.h
index 7fcf29a4e0de..6c9282866770 100644
--- a/include/linux/kstrtox.h
+++ b/include/linux/kstrtox.h
@@ -142,9 +142,9 @@ static inline int __must_check kstrtos32_from_user(const char __user *s, size_t
  * Keep in mind above caveat.
  */
 
-extern unsigned long simple_strtoul(const char *,char **,unsigned int);
-extern long simple_strtol(const char *,char **,unsigned int);
-extern unsigned long long simple_strtoull(const char *,char **,unsigned int);
-extern long long simple_strtoll(const char *,char **,unsigned int);
+unsigned long simple_strtoul(const char *cp, char **endp, unsigned int base);
+long simple_strtol(const char *cp, char **endp, unsigned int base);
+unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base);
+long long simple_strtoll(const char *cp, char **endp, unsigned int base);
 
 #endif	/* _LINUX_KSTRTOX_H */
-- 
2.50.1