From: Guennadi Liakhovetski <lg@denx.de>
Date: Thu, 12 Feb 2009 13:27:22 +0000 (+0100)
Subject: mxc: first set GPIO level, then switch direction to output
X-Git-Tag: firefly_0821_release~15211^2~29^2~22
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=999981d943e626bff5d031de1bf06435afb10ced;p=firefly-linux-kernel-4.4.55.git

mxc: first set GPIO level, then switch direction to output

Make sure not to create spurious pulses on GPIOs, when configuring them as
output: first set required level, then switch direction.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---

diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c
index ccbd94adc668..c6483bad8a26 100644
--- a/arch/arm/plat-mxc/gpio.c
+++ b/arch/arm/plat-mxc/gpio.c
@@ -200,8 +200,8 @@ static int mxc_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 static int mxc_gpio_direction_output(struct gpio_chip *chip,
 				     unsigned offset, int value)
 {
-	_set_gpio_direction(chip, offset, 1);
 	mxc_gpio_set(chip, offset, value);
+	_set_gpio_direction(chip, offset, 1);
 	return 0;
 }