[PATCH 18/33] power: supply: use match_string() helper

[Yisheng Xie]

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

Cc: Sebastian Reichel <s...@kernel.org>
Cc: linux...@vger.kernel.org
Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
 drivers/power/supply/power_supply_core.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/power/supply/power_supply_core.c 
b/drivers/power/supply/power_supply_core.c
index feac7b0..84da3a2 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -36,8 +36,6 @@
 static bool __power_supply_is_supplied_by(struct power_supply *supplier,
                                         struct power_supply *supply)
 {
-       int i;
-
        if (!supply->supplied_from && !supplier->supplied_to)
                return false;
 
@@ -45,18 +43,16 @@ static bool __power_supply_is_supplied_by(struct 
power_supply *supplier,
        if (supply->supplied_from) {
                if (!supplier->desc->name)
                        return false;
-               for (i = 0; i < supply->num_supplies; i++)
-                       if (!strcmp(supplier->desc->name, 
supply->supplied_from[i]))
-                               return true;
+               return match_string((const char **)supply->supplied_from,
+                                   supply->num_supplies,
+                                   supplier->desc->name) >= 0;
        } else {
                if (!supply->desc->name)
                        return false;
-               for (i = 0; i < supplier->num_supplicants; i++)
-                       if (!strcmp(supplier->supplied_to[i], 
supply->desc->name))
-                               return true;
+               return match_string((const char **)supplier->supplied_to,
+                                   supplier->num_supplicants,
+                                   supply->desc->name) >= 0;
        }
-
-       return false;
 }
 
 static int __power_supply_changed_work(struct device *dev, void *data)
-- 
1.7.12.4