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Commit 98022940 authored by Will Deacon's avatar Will Deacon
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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: default avatarColin Cross <ccross@android.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent adfed159

arch/arm/mach-tegra/gpio.c

+6 −3
Original line number Diff line number Diff line
@@ -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);



}