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

This patch updates the Nomadik 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.

Cc: Rabin Vincent <rabin@rab.in>
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/arch/arm/plat-nomadik/gpio.c b/arch/arm/plat-nomadik/gpio.c
index f49748e..307b813 100644 (file)
--- a/arch/arm/plat-nomadik/gpio.c
+++ b/arch/arm/plat-nomadik/gpio.c
@@ -23,6 +23,8 @@
 #include <linux/irq.h>
 #include <linux/slab.h>
 
+#include <asm/mach/irq.h>
+
 #include <plat/pincfg.h>
 #include <mach/hardware.h>
 #include <mach/gpio.h>
@@ -681,13 +683,7 @@ static void __nmk_gpio_irq_handler(unsigned int irq, struct irq_desc *desc,
        struct irq_chip *host_chip = irq_get_chip(irq);
        unsigned int first_irq;
 
-       if (host_chip->irq_mask_ack)
-               host_chip->irq_mask_ack(&desc->irq_data);
-       else {
-               host_chip->irq_mask(&desc->irq_data);
-               if (host_chip->irq_ack)
-                       host_chip->irq_ack(&desc->irq_data);
-       }
+       chained_irq_enter(host_chip, desc);
 
        nmk_chip = irq_get_handler_data(irq);
        first_irq = NOMADIK_GPIO_TO_IRQ(nmk_chip->chip.base);
@@ -698,7 +694,7 @@ static void __nmk_gpio_irq_handler(unsigned int irq, struct irq_desc *desc,
                status &= ~BIT(bit);
        }
 
-       host_chip->irq_unmask(&desc->irq_data);
+       chained_irq_exit(host_chip, desc);
 }
 
 static void nmk_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)