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 95633bb..67776bc 100644
--- a/arch/arm/mach-mx3/mach-mx31moboard.c
+++ b/arch/arm/mach-mx3/mach-mx31moboard.c
@@ -125,13 +125,25 @@
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 = {