[PATCH 3/4] ARM: pxa: add irq ack for gpio irq

[Eric Miao]

On Thu, Sep 8, 2011 at 9:18 PM, Chao Xie <chao.xie at marvell.com> wrote:
> For previous pxa3xx and pxa168, pxa9xx, the interrupt controller does
> not need any ack for the interrupt.
> For next ARM V7 SMP core, it will use GIC, and it need ack for the
> interrupt.
>
> Signed-off-by: Chao Xie <chao.xie at marvell.com>
> ---
>  arch/arm/plat-pxa/gpio.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/plat-pxa/gpio.c b/arch/arm/plat-pxa/gpio.c
> index 15de09d..66ae80a 100644
> --- a/arch/arm/plat-pxa/gpio.c
> +++ b/arch/arm/plat-pxa/gpio.c
> @@ -19,6 +19,7 @@
>  #include <linux/slab.h>
>
>  #include <mach/gpio.h>
> +#include <asm/mach/irq.h>
>
>  int pxa_last_gpio;
>
> @@ -206,7 +207,9 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
>        struct pxa_gpio_chip *c;
>        int loop, gpio, gpio_base, n;
>        unsigned long gedr;
> +       struct irq_chip *chip = irq_get_chip(irq);
>
> +       chained_irq_enter(chip, desc);
>        do {
>                loop = 0;
>                for_each_gpio_chip(gpio, c) {
> @@ -225,6 +228,7 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
>                        }
>                }
>        } while (loop);
> +       chained_irq_exit(chip, desc);
>  }
>
>  static void pxa_ack_muxed_gpio(struct irq_data *d)

Looks good to me.