[PATCH v2 19/21] bcache: use match_string() helper

[Yisheng Xie]

match_string() returns the index of an array for a matching string,
which can be used instead of open coded variant.

Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Cc: linux-bcache@xxxxxxxxxxxxxxx 
Signed-off-by: Yisheng Xie <xieyisheng1@xxxxxxxxxx>
---
 drivers/md/bcache/util.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c
index 74febd5..cd1f4fd 100644
--- a/drivers/md/bcache/util.c
+++ b/drivers/md/bcache/util.c
@@ -136,22 +136,17 @@ ssize_t bch_snprint_string_list(char *buf, size_t size, const char * const list[
 
 ssize_t bch_read_string_list(const char *buf, const char * const list[])
 {
-	size_t i;
+	ssize_t i;
 	char *s, *d = kstrndup(buf, PAGE_SIZE - 1, GFP_KERNEL);
 	if (!d)
 		return -ENOMEM;
 
 	s = strim(d);
 
-	for (i = 0; list[i]; i++)
-		if (!strcmp(list[i], s))
-			break;
+	i = match_string(list, -1, s);
 
 	kfree(d);
 
-	if (!list[i])
-		return -EINVAL;
-
 	return i;
 }
 
-- 
1.7.12.4