lib/string.c: simplify stricmp()
Removes 32 bytes on core2 with gcc 4.4.1:
text data bss dec hex filename
3196 0 0 3196 c7c lib/string-BEFORE.o
3164 0 0 3164 c5c lib/string-AFTER.o
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/lib/string.c b/lib/string.c
index a1cdcfcc..0f86245 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -36,25 +36,21 @@
/* Yes, Virginia, it had better be unsigned */
unsigned char c1, c2;
- c1 = c2 = 0;
- if (len) {
- do {
- c1 = *s1;
- c2 = *s2;
- s1++;
- s2++;
- if (!c1)
- break;
- if (!c2)
- break;
- if (c1 == c2)
- continue;
- c1 = tolower(c1);
- c2 = tolower(c2);
- if (c1 != c2)
- break;
- } while (--len);
- }
+ if (!len)
+ return 0;
+
+ do {
+ c1 = *s1++;
+ c2 = *s2++;
+ if (!c1 || !c2)
+ break;
+ if (c1 == c2)
+ continue;
+ c1 = tolower(c1);
+ c2 = tolower(c2);
+ if (c1 != c2)
+ break;
+ } while (--len);
return (int)c1 - (int)c2;
}
EXPORT_SYMBOL(strnicmp);