Max Filippov afb415f72d
xtensa: don't use linux IRQ #0 ...
commit e5c86679d5#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 #.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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