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    Subject[tip: irq/urgent] genirq/irqdomain: Make sure all irq domain flags are distinct
    The following commit has been merged into the irq/urgent branch of tip:

    Commit-ID: 2546287c5fb363a0165933ae2181c92f03e701d0
    Gitweb: https://git.kernel.org/tip/2546287c5fb363a0165933ae2181c92f03e701d0
    Author: Zenghui Yu <yuzenghui@huawei.com>
    AuthorDate: Fri, 21 Feb 2020 10:07:25 +08:00
    Committer: Thomas Gleixner <tglx@linutronix.de>
    CommitterDate: Fri, 21 Feb 2020 11:29:15 +01:00

    genirq/irqdomain: Make sure all irq domain flags are distinct

    This was noticed when printing debugfs for MSIs on my ARM64 server. The
    new dstate IRQD_MSI_NOMASK_QUIRK came out surprisingly while it should only
    be the x86 stuff for the time being...

    The new MSI quirk flag uses the same bit as IRQ_DOMAIN_NAME_ALLOCATED which
    is oddly defined as bit 6 for no good reason.

    Switch it to the non used bit 1.

    Fixes: 6f1a4891a592 ("x86/apic/msi: Plug non-maskable MSI affinity race")
    Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Cc: stable@vger.kernel.org
    Link: https://lkml.kernel.org/r/20200221020725.2038-1-yuzenghui@huawei.com
    ---
    include/linux/irqdomain.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
    index b2d4757..8d062e8 100644
    --- a/include/linux/irqdomain.h
    +++ b/include/linux/irqdomain.h
    @@ -192,7 +192,7 @@ enum {
    IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0),

    /* Irq domain name was allocated in __irq_domain_add() */
    - IRQ_DOMAIN_NAME_ALLOCATED = (1 << 6),
    + IRQ_DOMAIN_NAME_ALLOCATED = (1 << 1),

    /* Irq domain is an IPI domain with virq per cpu */
    IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2),
    \
     
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