irqchip/bcm-7038-l1: Report that effective affinity is a single target

The BCM 7038-L1 driver only targets a single CPU at a time, even if
the notional affinity is wider. Let's inform the core code
about this.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: http://lkml.kernel.org/r/20170818083925.10108-9-marc.zyngier@arm.com

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index b36a55d..39bfa5b 100644 (file)
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -102,6 +102,7 @@ config BCM7038_L1_IRQ
        bool
        select GENERIC_IRQ_CHIP
        select IRQ_DOMAIN
+       select GENERIC_IRQ_EFFECTIVE_AFF_MASK
 
 config BCM7120_L2_IRQ
        bool

diff --git a/drivers/irqchip/irq-bcm7038-l1.c b/drivers/irqchip/irq-bcm7038-l1.c
index c2662a1..55cfb98 100644 (file)
--- a/drivers/irqchip/irq-bcm7038-l1.c
+++ b/drivers/irqchip/irq-bcm7038-l1.c
@@ -212,6 +212,8 @@ static int bcm7038_l1_set_affinity(struct irq_data *d,
                __bcm7038_l1_unmask(d, first_cpu);
 
        raw_spin_unlock_irqrestore(&intc->lock, flags);
+       irq_data_update_effective_affinity(d, cpumask_of(first_cpu));
+
        return 0;
 }
 
@@ -299,6 +301,7 @@ static int bcm7038_l1_map(struct irq_domain *d, unsigned int virq,
 {
        irq_set_chip_and_handler(virq, &bcm7038_l1_irq_chip, handle_level_irq);
        irq_set_chip_data(virq, d->host_data);
+       irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(virq)));
        return 0;
 }