clocksource: exynos_mct: Set IRQ affinity when the CPU goes online

[mirror_ubuntu-hirsute-kernel.git] / drivers / clocksource / exynos_mct.c

diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index 5b34768f4d7c79f68253966acc8e8268e53f318e..62b0de6a18370fade34eca20205557bd5871cc3a 100644 (file)
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -428,7 +428,6 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt)
                                evt->irq);
                        return -EIO;
                }
-               irq_set_affinity(evt->irq, cpumask_of(cpu));
        } else {
                enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0);
        }
@@ -449,6 +448,7 @@ static int exynos4_mct_cpu_notify(struct notifier_block *self,
                                           unsigned long action, void *hcpu)
 {
        struct mct_clock_event_device *mevt;
+       unsigned int cpu;
 
        /*
         * Grab cpu pointer in each case to avoid spurious
@@ -459,6 +459,12 @@ static int exynos4_mct_cpu_notify(struct notifier_block *self,
                mevt = this_cpu_ptr(&percpu_mct_tick);
                exynos4_local_timer_setup(&mevt->evt);
                break;
+       case CPU_ONLINE:
+               cpu = (unsigned long)hcpu;
+               if (mct_int_type == MCT_INT_SPI)
+                       irq_set_affinity(mct_irqs[MCT_L0_IRQ + cpu],
+                                               cpumask_of(cpu));
+               break;
        case CPU_DYING:
                mevt = this_cpu_ptr(&percpu_mct_tick);
                exynos4_local_timer_stop(&mevt->evt);
@@ -500,6 +506,8 @@ static void __init exynos4_timer_resources(struct device_node *np, void __iomem
                                         &percpu_mct_tick);
                WARN(err, "MCT: can't request IRQ %d (%d)\n",
                     mct_irqs[MCT_L0_IRQ], err);
+       } else {
+               irq_set_affinity(mct_irqs[MCT_L0_IRQ], cpumask_of(0));
        }
 
        err = register_cpu_notifier(&exynos4_mct_cpu_nb);