net: smc91x: make use of 4th parameter to devm_gpiod_get_index

Since 39b2bbe3d715 (gpio: add flags argument to gpiod_get*() functions)
which appeared in v3.17-rc1, the gpiod_get* functions take an additional
parameter that allows to specify direction and initial value for output.
Simplify accordingly.

Moreover use devm_gpiod_get_index_optional for still simpler handling.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c
index 8678e39aba08cfe0d5b3b0578348b258812ec4ec..5a1a3e7c93e7952adcd3a75d6db1c3afb75d9f42 100644 (file)
--- a/drivers/net/ethernet/smsc/smc91x.c
+++ b/drivers/net/ethernet/smsc/smc91x.c
@@ -2204,27 +2204,18 @@ static int try_toggle_control_gpio(struct device *dev,
                                   int value, unsigned int nsdelay)
 {
        struct gpio_desc *gpio = *desc;
+       enum gpiod_flags flags = value ? GPIOD_OUT_LOW : GPIOD_OUT_HIGH;
        int res;
 
-       gpio = devm_gpiod_get_index(dev, name, index);
-       if (IS_ERR(gpio)) {
-               if (PTR_ERR(gpio) == -ENOENT) {
-                       *desc = NULL;
-                       return 0;
-               }
-
+       gpio = devm_gpiod_get_index_optional(dev, name, index, flags);
+       if (IS_ERR(gpio))
                return PTR_ERR(gpio);
+
+       if (gpio) {
+               if (nsdelay)
+                       usleep_range(nsdelay, 2 * nsdelay);
+               gpiod_set_value_cansleep(gpio, value);
        }
-       res = gpiod_direction_output(gpio, !value);
-       if (res) {
-               dev_err(dev, "unable to toggle gpio %s: %i\n", name, res);
-               devm_gpiod_put(dev, gpio);
-               gpio = NULL;
-               return res;
-       }
-       if (nsdelay)
-               usleep_range(nsdelay, 2 * nsdelay);
-       gpiod_set_value_cansleep(gpio, value);
        *desc = gpio;
 
        return 0;