• Max Filippov's avatar
    xtensa: don't use linux IRQ #0 · e5c86679
    Max Filippov authored
    Linux IRQ #0 is reserved for error reporting and may not be used.
    Increase NR_IRQS for one additional slot and increase
    irq_domain_add_legacy parameter first_irq value to 1, so that linux
    IRQ #0 is not associated with hardware IRQ #0 in legacy IRQ domains.
    Introduce macro XTENSA_PIC_LINUX_IRQ for static translation of xtensa
    PIC hardware IRQ # to linux IRQ #. Use this macro in XTFPGA platform
    data definitions.
    This fixes inability to use hardware IRQ #0 in configurations that don't
    use device tree and allows for non-identity mapping between linux IRQ #
    and hardware IRQ #.
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
hardware.h 1.88 KB