From e033108bf7e585755350b554048229d1fd10a02e Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 28 Jun 2006 16:42:02 +0100 Subject: [PATCH] [ARM] 3672/1: PXA: don't probe output GPIOs for interrupt Patch from Guennadi Liakhovetski Currently probe_irq_on() on PXA will silently reconfigure all output GPIOs, that are not configured as alternate functions, for input. Avoid that. Upon CPU reset all GPIOs are configured as inputs, so, if a GPIO is configured as output, it has been done so intentionally. Signed-off-by: G. Liakhovetski Signed-off-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/mach-pxa/irq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c index 539b596005fc..d9635ff4b10c 100644 --- a/arch/arm/mach-pxa/irq.c +++ b/arch/arm/mach-pxa/irq.c @@ -88,8 +88,8 @@ static int pxa_gpio_irq_type(unsigned int irq, unsigned int type) if (type == IRQT_PROBE) { /* Don't mess with enabled GPIOs using preconfigured edges or - GPIOs set to alternate function during probe */ - if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx]) & + GPIOs set to alternate function or to output during probe */ + if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx] | GPDR(gpio)) & GPIO_bit(gpio)) return 0; if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2))) -- GitLab