diff options
Diffstat (limited to 'drivers/gpio/gpio-mxc.c')
| -rw-r--r-- | drivers/gpio/gpio-mxc.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index c1a1e00b8cb0..b7bc18b630ba 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -20,6 +20,7 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ +#include <linux/moduleparam.h> #include <linux/err.h> #include <linux/init.h> #include <linux/interrupt.h> @@ -36,6 +37,10 @@ #include <linux/of_device.h> #include <linux/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 */ @@ -429,8 +434,10 @@ 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) { /* |