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-rw-r--r--lib/string.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/string.c b/lib/string.c
index ed83562a53ae..1a7d3fd52541 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -656,6 +656,32 @@ int match_string(const char * const *array, size_t n, const char *string)
}
EXPORT_SYMBOL(match_string);
+/**
+ * __sysfs_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
+ * @str: string to match with
+ *
+ * Returns index of @str in the @array or -EINVAL, just like match_string().
+ * Uses sysfs_streq instead of strcmp for matching.
+ */
+int __sysfs_match_string(const char * const *array, size_t n, const char *str)
+{
+ const char *item;
+ int index;
+
+ for (index = 0; index < n; index++) {
+ item = array[index];
+ if (!item)
+ break;
+ if (sysfs_streq(item, str))
+ return index;
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(__sysfs_match_string);
+
#ifndef __HAVE_ARCH_MEMSET
/**
* memset - Fill a region of memory with the given value