From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@linaro.org (Shawn Guo) Date: Mon, 19 Sep 2011 17:10:32 +0800 Subject: [PATCH] gpio/mxc: make it work with imx6q Message-ID: <1316423432-18333-1-git-send-email-shawn.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The imx6q is a Cortex-A9 Quad Core SoC, which has GIC as the primary interrupt controller. GIC requires gpio irq handler to signal EOI, otherwise system will hang whenever there is a gpio irq triggered. Signed-off-by: Shawn Guo --- drivers/gpio/gpio-mxc.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index 4340aca..00b4c9c 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -233,6 +233,9 @@ static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc) u32 irq_stat; struct mxc_gpio_port *port = irq_get_handler_data(irq); + if (desc->irq_data.chip->irq_eoi) + desc->irq_data.chip->irq_eoi(&desc->irq_data); + irq_stat = readl(port->base + GPIO_ISR) & readl(port->base + GPIO_IMR); mxc_gpio_irq_handler(port, irq_stat); -- 1.7.4.1