* [patch 088/115] lib/kstrtox.c: delete end-of-string test
@ 2017-07-10 22:51 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2017-07-10 22:51 UTC (permalink / raw)
To: adobriyan, akpm, mm-commits, torvalds
From: Alexey Dobriyan <adobriyan@gmail.com>
Subject: lib/kstrtox.c: 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.
Link: http://lkml.kernel.org/r/20170514193756.GA32563@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
lib/kstrtox.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN lib/kstrtox.c~kstrtox-delete-end-of-string-test lib/kstrtox.c
--- a/lib/kstrtox.c~kstrtox-delete-end-of-string-test
+++ a/lib/kstrtox.c
@@ -51,7 +51,7 @@ unsigned int _parse_integer(const char *
res = 0;
rv = 0;
- while (*s) {
+ while (1) {
unsigned int val;
if ('0' <= *s && *s <= '9')
_
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2017-07-10 22:51 [patch 088/115] lib/kstrtox.c: delete end-of-string test akpm
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