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    Subject[tip:irq/core] irqchip/bcm-7038-l1: Report that effective affinity is a single target
    Commit-ID:  b8d9884ac6c2c5222ea4a2d23bf9bec613e8eacc
    Gitweb: http://git.kernel.org/tip/b8d9884ac6c2c5222ea4a2d23bf9bec613e8eacc
    Author: Marc Zyngier <marc.zyngier@arm.com>
    AuthorDate: Fri, 18 Aug 2017 09:39:21 +0100
    Committer: Thomas Gleixner <tglx@linutronix.de>
    CommitDate: Fri, 18 Aug 2017 10:54:42 +0200

    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

    ---
    drivers/irqchip/Kconfig | 1 +
    drivers/irqchip/irq-bcm7038-l1.c | 3 +++
    2 files changed, 4 insertions(+)

    diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
    index b36a55d..39bfa5b 100644
    --- 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
    --- 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;
    }

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