From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Date: Wed, 23 Jun 2010 09:57:19 +0000 (+0200)
Subject: ARM: mx3: complement uart init routine with an exit routine
X-Git-Tag: MMI-PSA29.97-13-9~23112^2^2~1^2~26^2
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5109a4597f7e758b8d20694392d0361a0b4c43b1;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

ARM: mx3: complement uart init routine with an exit routine

moboard_uart0_init requests a gpio.   Without an exit function that
frees that gpio again binding the uart a second time doesn't work.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---

diff --git a/arch/arm/mach-mx3/mach-mx31moboard.c b/arch/arm/mach-mx3/mach-mx31moboard.c
index 95633bb063bf..67776bc61c33 100644
--- a/arch/arm/mach-mx3/mach-mx31moboard.c
+++ b/arch/arm/mach-mx3/mach-mx31moboard.c
@@ -125,13 +125,25 @@ static struct platform_device mx31moboard_flash = {
 
 static int moboard_uart0_init(struct platform_device *pdev)
 {
-	gpio_request(IOMUX_TO_GPIO(MX31_PIN_CTS1), "uart0-cts-hack");
-	gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CTS1), 0);
-	return 0;
+	int ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_CTS1), "uart0-cts-hack");
+	if (ret)
+		return ret;
+
+	ret = gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CTS1), 0);
+	if (ret)
+		gpio_free(IOMUX_TO_GPIO(MX31_PIN_CTS1));
+
+	return ret;
+}
+
+static void moboard_uart0_exit(struct platform_device *pdev)
+{
+	gpio_free(IOMUX_TO_GPIO(MX31_PIN_CTS1));
 }
 
 static const struct imxuart_platform_data uart0_pdata __initconst = {
 	.init = moboard_uart0_init,
+	.exit = moboard_uart0_exit,
 };
 
 static const struct imxuart_platform_data uart4_pdata __initconst = {