irqchip/gic-v2: Reset APRn registers at boot time

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Booting a crash kernel while in an interrupt handler is likely
to leave the Active Priority Registers with some state that
is not relevant to the new kernel, and is likely to lead
to erratic behaviours such as interrupts not firing as their
priority is already active.

As a sanity measure, wipe the APRs clean on startup.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

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Marc Zyngier 2018-03-09 14:53:19 +00:00

parent 1ae8862e27

commit c5e1035c96

1 changed files with 11 additions and 6 deletions

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drivers/irqchip/irq-gic.c

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