diff options
| -rw-r--r-- | drivers/gpio/gpio-mxc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index 9f7446a7ac64..53ee7a8dcc5a 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -35,6 +35,10 @@ #include <linux/module.h> #include <asm-generic/bug.h> +static bool noclearirq = false; +module_param(noclearirq, bool, 0); +MODULE_PARM_DESC(noclearirq, "do not clear IRQ mask/status on probe"); + enum mxc_gpio_hwtype { IMX1_GPIO, /* runs on i.mx1 */ IMX21_GPIO, /* runs on i.mx21 and i.mx27 */ @@ -425,8 +429,10 @@ static int mxc_gpio_probe(struct platform_device *pdev) return port->irq; /* disable the interrupt and clear the status */ - writel(0, port->base + GPIO_IMR); - writel(~0, port->base + GPIO_ISR); + if (!noclearirq) { + writel(0, port->base + GPIO_IMR); + writel(~0, port->base + GPIO_ISR); + } if (mxc_gpio_hwtype == IMX21_GPIO) { /* |