[PATCH v1] gpio: Convert to use match_string() helper

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

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@xxxxxxxxxxxxxxx>
---
 drivers/gpio/gpiolib-of.c | 7 ++-----
 1 file 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);
-- 
2.17.0

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