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

This patch updates the MSM 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.

Tested-and-reviewed-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/arch/arm/mach-msm/gpio-v2.c b/arch/arm/mach-msm/gpio-v2.c
index 56a964e..cc9c4fd 100644 (file)
--- a/arch/arm/mach-msm/gpio-v2.c
+++ b/arch/arm/mach-msm/gpio-v2.c
@@ -27,6 +27,9 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>
+
+#include <asm/mach/irq.h>
+
 #include <mach/msm_iomap.h>
 #include "gpiomux.h"
 
@@ -309,8 +312,10 @@ static int msm_gpio_irq_set_type(struct irq_data *d, unsigned int flow_type)
  */
 static void msm_summary_irq_handler(unsigned int irq, struct irq_desc *desc)
 {
-       struct irq_data *data = irq_desc_get_irq_data(desc);
        unsigned long i;
+       struct irq_chip *chip = irq_desc_get_chip(desc);
+
+       chained_irq_enter(chip, desc);
 
        for (i = find_first_bit(msm_gpio.enabled_irqs, NR_GPIO_IRQS);
             i < NR_GPIO_IRQS;
@@ -319,7 +324,8 @@ static void msm_summary_irq_handler(unsigned int irq, struct irq_desc *desc)
                        generic_handle_irq(msm_gpio_to_irq(&msm_gpio.gpio_chip,
                                                           i));
        }
-       data->chip->irq_ack(data);
+
+       chained_irq_exit(chip, desc);
 }
 
 static int msm_gpio_irq_set_wake(struct irq_data *d, unsigned int on)