linux-kernel - [PATCH 1/2] kstrtox: delete end-of-string test

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Message-ID: <20170514193756.GA32563@avx2>
Date:   Sun, 14 May 2017 22:37:56 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] kstrtox: delete end-of-string test

Standard "while (*s)" test is unnecessary because NUL won't pass
valid-digit test anyway. Save one branch per parsed character.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 lib/kstrtox.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -51,7 +51,7 @@ unsigned int _parse_integer(const char *s, unsigned int base, unsigned long long
 
 	res = 0;
 	rv = 0;
-	while (*s) {
+	while (1) {
 		unsigned int val;
 
 		if ('0' <= *s && *s <= '9')