From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Fri, 20 Jan 2012 19:32:04 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] rtdm difficulties
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To: Terry Fryar <terry.fryar@domain.hid>
Cc: xenomai@xenomai.org

On 01/20/2012 07:24 PM, Terry Fryar wrote:
> Yeh, omap and gpio.....edge irq from a square wave pulse.... 

Try this patch:

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 30cb7d4..114ccf0 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -1272,7 +1272,7 @@ static void gpio_irq_handler(unsigned int irq,
struct irq_desc *desc)
 	u32 retrigger = 0;
 	int unmasked = 0;

-	desc->irq_data.chip->irq_ack(&desc->irq_data);
+	desc->irq_data.chip->irq_mask_ack(&desc->irq_data);

 	bank = get_irq_data(irq);
 #ifdef CONFIG_ARCH_OMAP1

-- 
                                                                Gilles.