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    Subject[tip:irq/core] irqchip/gic-v3: Mark the base irq domain as DOMAIN_BUS_WIRED
    Commit-ID:  b2425b51bed7437c08c11ce71bb0f308f4516451
    Gitweb: https://git.kernel.org/tip/b2425b51bed7437c08c11ce71bb0f308f4516451
    Author: Marc Zyngier <marc.zyngier@arm.com>
    AuthorDate: Tue, 8 May 2018 13:14:35 +0100
    Committer: Thomas Gleixner <tglx@linutronix.de>
    CommitDate: Sun, 13 May 2018 15:59:01 +0200

    irqchip/gic-v3: Mark the base irq domain as DOMAIN_BUS_WIRED

    As we're about to introduce MSI domains based on top of the GICv3
    domain, we must make sure nothing the new domains do not alias
    with the core domain.

    So let's tag that core domain with the DOMAIN_BUS_WIRED attribute,
    ensuring it gets picked up by other drivers that use irq_find_host().

    Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Cc: Rob Herring <robh@kernel.org>
    Cc: Jason Cooper <jason@lakedaemon.net>
    Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
    Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
    Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
    Cc: Miquel Raynal <miquel.raynal@bootlin.com>
    Link: https://lkml.kernel.org/r/20180508121438.11301-7-marc.zyngier@arm.com

    ---
    drivers/irqchip/irq-gic-v3.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
    index e5d101418390..94164d7b87a6 100644
    --- a/drivers/irqchip/irq-gic-v3.c
    +++ b/drivers/irqchip/irq-gic-v3.c
    @@ -1099,6 +1099,7 @@ static int __init gic_init_bases(void __iomem *dist_base,

    gic_data.domain = irq_domain_create_tree(handle, &gic_irq_domain_ops,
    &gic_data);
    + irq_domain_update_bus_token(gic_data.domain, DOMAIN_BUS_WIRED);
    gic_data.rdists.rdist = alloc_percpu(typeof(*gic_data.rdists.rdist));
    gic_data.rdists.has_vlpis = true;
    gic_data.rdists.has_direct_lpi = true;
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