On Fri, Jun 14, 2013 at 03:02:50PM +0100, Chander Kashyap wrote:
> Replace the (setup/remove)_irq calls for local timer registration with
> (request/free)_irq calls. This generalizes the local timer registration API.
> Suggested by Mark Rutland.
>
> Signed-off-by: Chander Kashyap <chander.kashyap@xxxxxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
>
> Replace the (setup/remove)_irq calls for local timer registration with
> (request/free)_irq calls. This generalises the local timer registration API.
>
> Signed-off-by: Chander Kashyap <chander.kashyap@xxxxxxxxxx>
This looks much nicer now.
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
> ---
> drivers/clocksource/exynos_mct.c | 35 +++++++++--------------------------
> 1 file changed, 9 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
> index 662fcc0..a704804 100644
> --- a/drivers/clocksource/exynos_mct.c
> +++ b/drivers/clocksource/exynos_mct.c
> @@ -400,18 +400,6 @@ static irqreturn_t exynos4_mct_tick_isr(int irq, void *dev_id)
> return IRQ_HANDLED;
> }
>
> -static struct irqaction mct_tick0_event_irq = {
> - .name = "mct_tick0_irq",
> - .flags = IRQF_TIMER | IRQF_NOBALANCING,
> - .handler = exynos4_mct_tick_isr,
> -};
> -
> -static struct irqaction mct_tick1_event_irq = {
> - .name = "mct_tick1_irq",
> - .flags = IRQF_TIMER | IRQF_NOBALANCING,
> - .handler = exynos4_mct_tick_isr,
> -};
> -
> static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
> {
> struct mct_clock_event_device *mevt;
> @@ -435,16 +423,15 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
> exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET);
>
> if (mct_int_type == MCT_INT_SPI) {
> - if (cpu == 0) {
> - mct_tick0_event_irq.dev_id = mevt;
> - evt->irq = mct_irqs[MCT_L0_IRQ];
> - setup_irq(evt->irq, &mct_tick0_event_irq);
> - } else {
> - mct_tick1_event_irq.dev_id = mevt;
> - evt->irq = mct_irqs[MCT_L1_IRQ];
> - setup_irq(evt->irq, &mct_tick1_event_irq);
> - irq_set_affinity(evt->irq, cpumask_of(1));
> + evt->irq = mct_irqs[MCT_L0_IRQ + cpu];
> + if (request_irq(evt->irq, exynos4_mct_tick_isr,
> + IRQF_TIMER | IRQF_NOBALANCING,
> + evt->name, mevt)) {
> + pr_err("exynos-mct: cannot register IRQ %d\n",
> + evt->irq);
> + return -EIO;
> }
> + irq_set_affinity(evt->irq, cpumask_of(cpu));
> } else {
> enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0);
> }
> @@ -454,13 +441,9 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
>
> static void exynos4_local_timer_stop(struct clock_event_device *evt)
> {
> - unsigned int cpu = smp_processor_id();
> evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
> if (mct_int_type == MCT_INT_SPI)
> - if (cpu == 0)
> - remove_irq(evt->irq, &mct_tick0_event_irq);
> - else
> - remove_irq(evt->irq, &mct_tick1_event_irq);
> + free_irq(evt->irq, this_cpu_ptr(&percpu_mct_tick));
> else
> disable_percpu_irq(mct_irqs[MCT_L0_IRQ]);
> }
> --
> 1.7.9.5
>
>
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