The patch titled
Subject: lib/string: introduce match_string() helper
has been added to the -mm tree. Its filename is
lib-string-introduce-match_string-helper.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-string-introduce-match_string-helper.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-string-introduce-match_string-helper.patch
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------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Subject: lib/string: introduce match_string() helper
Occasionally we have to search for an occurrence of a string in an array
of strings. Make a simple helper for that purpose.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Cc: Sebastian Reichel <sre@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/string.h | 2 ++
lib/string.c | 26 ++++++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff -puN include/linux/string.h~lib-string-introduce-match_string-helper include/linux/string.h
--- a/include/linux/string.h~lib-string-introduce-match_string-helper
+++ a/include/linux/string.h
@@ -130,6 +130,8 @@ extern void argv_free(char **argv);
extern bool sysfs_streq(const char *s1, const char *s2);
extern int strtobool(const char *s, bool *res);
+int match_string(const char * const *array, size_t n, const char *string);
+
#ifdef CONFIG_BINARY_PRINTF
int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args);
int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf);
diff -puN lib/string.c~lib-string-introduce-match_string-helper lib/string.c
--- a/lib/string.c~lib-string-introduce-match_string-helper
+++ a/lib/string.c
@@ -631,6 +631,32 @@ bool sysfs_streq(const char *s1, const c
EXPORT_SYMBOL(sysfs_streq);
/**
+ * match_string - matches given string in an array
+ * @array: array of strings
+ * @n: number of strings in the array or -1 for NULL terminated arrays
+ * @string: string to match with
+ *
+ * Return:
+ * index of a @string in the @array if matches, or %-ENODATA otherwise.
+ */
+int match_string(const char * const *array, size_t n, const char *string)
+{
+ int index;
+ const char *item;
+
+ for (index = 0; index < n; index++) {
+ item = array[index];
+ if (!item)
+ break;
+ if (!strcmp(item, string))
+ return index;
+ }
+
+ return -ENODATA;
+}
+EXPORT_SYMBOL(match_string);
+
+/**
* strtobool - convert common user inputs into boolean values
* @s: input string
* @res: result
_
Patches currently in -mm which might be from andriy.shevchenko@xxxxxxxxxxxxxxx are
lib-string-introduce-match_string-helper.patch
device-property-convert-to-use-match_string-helper.patch
pinctrl-convert-to-use-match_string-helper.patch
drm-edid-convert-to-use-match_string-helper.patch
power-charger_manager-convert-to-use-match_string-helper.patch
power-ab8500-convert-to-use-match_string-helper.patch
ata-hpt366-convert-to-use-match_string-helper.patch
ide-hpt366-convert-to-use-match_string-helper.patch
lib-string_helpers-export-string_units_210-for-others.patch
lib-string_helpers-fix-indentation-in-few-places.patch
x86-efi-use-proper-units-in-efi_find_mirror.patch
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