[PATCH 2/2] irqchip/gic: Only populate set_affinity for the root controller

From: Jon Hunter
Date: Mon Dec 21 2015 - 09:13:39 EST


Setting the affinity of an IRQ, it only applicable for the root
interrupt controller and so only populate this operator for the root
controller.

Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
---
drivers/irqchip/irq-gic.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 94ad60c424a7..53b03f6038c1 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -384,9 +384,6 @@ static struct irq_chip gic_chip = {
.irq_unmask = gic_unmask_irq,
.irq_eoi = gic_eoi_irq,
.irq_set_type = gic_set_type,
-#ifdef CONFIG_SMP
- .irq_set_affinity = gic_set_affinity,
-#endif
.irq_get_irqchip_state = gic_irq_get_irqchip_state,
.irq_set_irqchip_state = gic_irq_set_irqchip_state,
.flags = IRQCHIP_SET_TYPE_MASKED |
@@ -1017,10 +1014,16 @@ static void __init __gic_init_bases(unsigned int gic_nr, int irq_start,
gic->chip.name = kasprintf(GFP_KERNEL, "GIC-%d", gic_nr);

/* Initialize irq_chip */
- if (static_key_true(&supports_deactivate) && gic_nr == 0) {
- gic->chip.irq_mask = gic_eoimode1_mask_irq;
- gic->chip.irq_eoi = gic_eoimode1_eoi_irq;
- gic->chip.irq_set_vcpu_affinity = gic_irq_set_vcpu_affinity;
+ if (gic_nr == 0) {
+ if (IS_ENABLED(CONFIG_SMP))
+ gic->chip.irq_set_affinity = gic_set_affinity;
+
+ if (static_key_true(&supports_deactivate)) {
+ gic->chip.irq_mask = gic_eoimode1_mask_irq;
+ gic->chip.irq_eoi = gic_eoimode1_eoi_irq;
+ gic->chip.irq_set_vcpu_affinity =
+ gic_irq_set_vcpu_affinity;
+ }
}

#ifdef CONFIG_GIC_NON_BANKED
--
2.1.4

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