The patch titled
lib: make _tolower() public
has been added to the -mm tree. Its filename is
lib-make-_tolower-public.patch
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------------------------------------------------------
Subject: lib: make _tolower() public
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
This function is required by *printf and kstrto* functions that are
located in the different modules. This patch makes _tolower() public.
However, it's good idea to not use the helper outside of mentioned
functions.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Acked-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/ctype.h | 9 +++++++++
lib/kstrtox.c | 5 -----
lib/vsprintf.c | 23 ++++++++++-------------
3 files changed, 19 insertions(+), 18 deletions(-)
diff -puN include/linux/ctype.h~lib-make-_tolower-public include/linux/ctype.h
--- a/include/linux/ctype.h~lib-make-_tolower-public
+++ a/include/linux/ctype.h
@@ -52,4 +52,13 @@ static inline unsigned char __toupper(un
#define tolower(c) __tolower(c)
#define toupper(c) __toupper(c)
+/*
+ * Fast implementation of tolower() for internal usage. Do not use in your
+ * code.
+ */
+static inline char _tolower(const char c)
+{
+ return c | 0x20;
+}
+
#endif
diff -puN lib/kstrtox.c~lib-make-_tolower-public lib/kstrtox.c
--- a/lib/kstrtox.c~lib-make-_tolower-public
+++ a/lib/kstrtox.c
@@ -19,11 +19,6 @@
#include <linux/types.h>
#include <asm/uaccess.h>
-static inline char _tolower(const char c)
-{
- return c | 0x20;
-}
-
static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res)
{
unsigned long long acc;
diff -puN lib/vsprintf.c~lib-make-_tolower-public lib/vsprintf.c
--- a/lib/vsprintf.c~lib-make-_tolower-public
+++ a/lib/vsprintf.c
@@ -31,13 +31,10 @@
#include <asm/div64.h>
#include <asm/sections.h> /* for dereference_function_descriptor() */
-/* Works only for digits and letters, but small and fast */
-#define TOLOWER(x) ((x) | 0x20)
-
static unsigned int simple_guess_base(const char *cp)
{
if (cp[0] == '0') {
- if (TOLOWER(cp[1]) == 'x' && isxdigit(cp[2]))
+ if (_tolower(cp[1]) == 'x' && isxdigit(cp[2]))
return 16;
else
return 8;
@@ -59,13 +56,13 @@ unsigned long long simple_strtoull(const
if (!base)
base = simple_guess_base(cp);
- if (base == 16 && cp[0] == '0' && TOLOWER(cp[1]) == 'x')
+ if (base == 16 && cp[0] == '0' && _tolower(cp[1]) == 'x')
cp += 2;
while (isxdigit(*cp)) {
unsigned int value;
- value = isdigit(*cp) ? *cp - '0' : TOLOWER(*cp) - 'a' + 10;
+ value = isdigit(*cp) ? *cp - '0' : _tolower(*cp) - 'a' + 10;
if (value >= base)
break;
result = result * base + value;
@@ -1036,8 +1033,8 @@ precision:
qualifier:
/* get the conversion qualifier */
spec->qualifier = -1;
- if (*fmt == 'h' || TOLOWER(*fmt) == 'l' ||
- TOLOWER(*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') {
@@ -1104,7 +1101,7 @@ qualifier:
spec->type = FORMAT_TYPE_LONG;
else
spec->type = FORMAT_TYPE_ULONG;
- } else if (TOLOWER(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;
@@ -1262,7 +1259,7 @@ int vsnprintf(char *buf, size_t size, co
if (qualifier == 'l') {
long *ip = va_arg(args, long *);
*ip = (str - buf);
- } else if (TOLOWER(qualifier) == 'z') {
+ } else if (_tolower(qualifier) == 'z') {
size_t *ip = va_arg(args, size_t *);
*ip = (str - buf);
} else {
@@ -1549,7 +1546,7 @@ do { \
void *skip_arg;
if (qualifier == 'l')
skip_arg = va_arg(args, long *);
- else if (TOLOWER(qualifier) == 'z')
+ else if (_tolower(qualifier) == 'z')
skip_arg = va_arg(args, size_t *);
else
skip_arg = va_arg(args, int *);
@@ -1855,8 +1852,8 @@ int vsscanf(const char *buf, const char
/* get conversion qualifier */
qualifier = -1;
- if (*fmt == 'h' || TOLOWER(*fmt) == 'l' ||
- TOLOWER(*fmt) == 'z') {
+ if (*fmt == 'h' || _tolower(*fmt) == 'l' ||
+ _tolower(*fmt) == 'z') {
qualifier = *fmt++;
if (unlikely(qualifier == *fmt)) {
if (qualifier == 'h') {
_
Patches currently in -mm which might be from andriy.shevchenko@xxxxxxxxxxxxxxx are
linux-next.patch
selinuxfs-remove-custome-hex_to_bin.patch
lib-make-_tolower-public.patch
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