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ARM: tegra: update GPIO chained IRQ handler to use entry/exit functions 

This patch updates the Tegra gpio chained IRQ handler to use the chained
IRQ enter/exit functions in order to function correctly on primary
controllers with different methods of flow control.

This is required for the GIC to move to fasteoi interrupt handling.

Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
hifive-unleashed-5.1
Will Deacon 2011-02-21 13:58:10 +00:00
parent adfed159ab
commit 98022940c2
1 changed files with 6 additions and 3 deletions
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9
arch/arm/mach-tegra/gpio.c
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@ -24,6 +24,8 @@
#include <linux/io.h>
#include <linux/gpio.h>
#include <asm/mach/irq.h>
#include <mach/iomap.h>
#include <mach/suspend.h>
@ -221,8 +223,9 @@ static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
int port;
int pin;
int unmasked = 0;
struct irq_chip *chip = irq_desc_get_chip(desc);
desc->irq_data.chip->irq_ack(&desc->irq_data);
chained_irq_enter(chip, desc);
bank = irq_get_handler_data(irq);
@ -241,7 +244,7 @@ static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
*/
if (lvl & (0x100 << pin)) {
unmasked = 1;
desc->irq_data.chip->irq_unmask(&desc->irq_data);
chained_irq_exit(chip, desc);
}
generic_handle_irq(gpio_to_irq(gpio + pin));
@ -249,7 +252,7 @@ static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
}
if (!unmasked)
desc->irq_data.chip->irq_unmask(&desc->irq_data);
chained_irq_exit(chip, desc);
}