From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Date: Thu, 26 Mar 2015 21:26:08 +0000 (+0100)
Subject: net: smc91x: make use of 4th parameter to devm_gpiod_get_index
X-Git-Tag: v4.1-rc1~128^2~126
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cb6e0b3690f48dffb9397c3e868164b689420441;p=platform%2Fkernel%2Flinux-exynos.git

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 8678e39..5a1a3e7 100644
--- 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;