gpio: Convert to use match_string() helper

The new helper returns index of the matching string in an array.
We are going to use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 586d15137c03..28d968088131 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -210,11 +210,8 @@ static struct gpio_desc *of_find_regulator_gpio(struct device *dev, const char *
         if (!con_id)
                 return ERR_PTR(-ENOENT);
 
-        for (i = 0; i < ARRAY_SIZE(whitelist); i++)
-                if (!strcmp(con_id, whitelist[i]))
-                        break;
-
-        if (i == ARRAY_SIZE(whitelist))
+        i = match_string(whitelist, ARRAY_SIZE(whitelist), con_id);
+        if (i < 0)
                 return ERR_PTR(-ENOENT);
 
         desc = of_get_named_gpiod_flags(np, con_id, 0, of_flags);