From 1af8071bd08ec17bd9467f6a9c3f17053c05c98c Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 16 Jan 2023 10:49:57 +0100 Subject: [PATCH] gpio: mxc: Always set GPIOs used as interrupt source to INPUT mode [ Upstream commit 8e88a0feebb241cab0253698b2f7358b6ebec802 ] Always configure GPIO pins which are used as interrupt source as INPUTs. In case the default pin configuration is OUTPUT, or the prior stage does configure the pins as OUTPUT, then Linux will not reconfigure the pin as INPUT and no interrupts are received. Always configure the interrupt source GPIO pin as input to fix the above case. Reviewed-by: Linus Walleij Fixes: 07bd1a6cc7cbb ("MXC arch: Add gpio support for the whole platform") Signed-off-by: Marek Vasut Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin --- drivers/gpio/gpio-mxc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index ba6ed2a413f5..0d5a9fee3c70 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -231,7 +231,7 @@ static int gpio_set_irq_type(struct irq_data *d, u32 type) writel(1 << gpio_idx, port->base + GPIO_ISR); - return 0; + return port->gc.direction_input(&port->gc, gpio_idx); } static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)