vsprintf: use TOLOWER whenever possible

It decreases code size as well:
 text    data     bss     dec     hex filename
15758       0       8   15766    3d96 vsprintf.o (ex lib/lib.a-BEFORE)
15726       0       8   15734    3d76 vsprintf.o (ex lib/lib.a-TOLOWER)

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Acked-by: 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/vsprintf.c b/lib/vsprintf.c
index 2e1dda2..cba2385 100644 (file)
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1034,8 +1034,8 @@ precision:
 qualifier:
        /* get the conversion qualifier */
        spec->qualifier = -1;
-       if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
-           *fmt == 'Z' || *fmt == 'z' || *fmt == 't') {
+       if (*fmt == 'h' || TOLOWER(*fmt) == 'l' ||
+           TOLOWER(*fmt) == 'z' || *fmt == 't') {
                spec->qualifier = *fmt++;
                if (unlikely(spec->qualifier == *fmt)) {
                        if (spec->qualifier == 'l') {
@@ -1102,7 +1102,7 @@ qualifier:
                        spec->type = FORMAT_TYPE_LONG;
                else
                        spec->type = FORMAT_TYPE_ULONG;
-       } else if (spec->qualifier == 'Z' || spec->qualifier == 'z') {
+       } else if (TOLOWER(spec->qualifier) == 'z') {
                spec->type = FORMAT_TYPE_SIZE_T;
        } else if (spec->qualifier == 't') {
                spec->type = FORMAT_TYPE_PTRDIFF;
@@ -1249,8 +1249,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
                        if (qualifier == 'l') {
                                long *ip = va_arg(args, long *);
                                *ip = (str - buf);
-                       } else if (qualifier == 'Z' ||
-                                       qualifier == 'z') {
+                       } else if (TOLOWER(qualifier) == 'z') {
                                size_t *ip = va_arg(args, size_t *);
                                *ip = (str - buf);
                        } else {
@@ -1540,7 +1539,7 @@ do {                                                                      \
                        void *skip_arg;
                        if (qualifier == 'l')
                                skip_arg = va_arg(args, long *);
-                       else if (qualifier == 'Z' || qualifier == 'z')
+                       else if (TOLOWER(qualifier) == 'z')
                                skip_arg = va_arg(args, size_t *);
                        else
                                skip_arg = va_arg(args, int *);
@@ -1851,8 +1850,8 @@ int vsscanf(const char *buf, const char *fmt, va_list args)
 
                /* get conversion qualifier */
                qualifier = -1;
-               if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
-                   *fmt == 'Z' || *fmt == 'z') {
+               if (*fmt == 'h' || TOLOWER(*fmt) == 'l' ||
+                   TOLOWER(*fmt) == 'z') {
                        qualifier = *fmt++;
                        if (unlikely(qualifier == *fmt)) {
                                if (qualifier == 'h') {