staging:iio:magnetometer:ak8975: use gpio_request_one api

Use gpio_request_one api, it looks cleaner.
Signed-off-by: Leed Aguilar <leed.aguilar@ti.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/iio/magnetometer/Kconfig

@@ -6,7 +6,7 @@ menu "Magnetometer sensors"
 config SENSORS_AK8975
 	tristate "Asahi Kasei AK8975 3-Axis Magnetometer"
 	depends on I2C
-	depends on GENERIC_GPIO
+	depends on GPIOLIB
 	help
 	  Say yes here to build support for Asahi Kasei AK8975 3-Axis
 	  Magnetometer.

drivers/staging/iio/magnetometer/ak8975.c

@@ -499,21 +499,13 @@ static int __devinit ak8975_probe(struct i2c_client *client,
 	/* We may not have a GPIO based IRQ to scan, that is fine, we will
 	   poll if so */
 	if (gpio_is_valid(eoc_gpio)) {
-		err = gpio_request(eoc_gpio, "ak_8975");
+		err = gpio_request_one(eoc_gpio, GPIOF_IN, "ak_8975");
 		if (err < 0) {
 			dev_err(&client->dev,
 				"failed to request GPIO %d, error %d\n",
 							eoc_gpio, err);
 			goto exit;
 		}
-
-		err = gpio_direction_input(eoc_gpio);
-		if (err < 0) {
-			dev_err(&client->dev,
-				"Failed to configure input direction for GPIO %d, error %d\n",
-						eoc_gpio, err);
-			goto exit_gpio;
-		}
 	}
 
 	/* Register with IIO */