irqchip/realtek-rtl: Fix off-by-one in routing

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There is an offset between routing values (1..6) and the connected MIPS
CPU interrupts (2..7), but no distinction was made between these two
values.

This issue was previously hidden during testing, because an interrupt
mapping was used where for each required interrupt another (unused)
routing was configured, with an offset of +1.

Offset the CPU IRQ numbers by -1 to retrieve the correct routing value.

Fixes: 9f3a0f34b8 ("irqchip: Add support for Realtek RTL838x/RTL839x interrupt controller")
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/177b920aa8d8610615692d0e657e509f363c85ca.1641739718.git.sander@svanheule.net

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Sander Vanheule 2022-01-09 15:54:33 +01:00 • committed by Marc Zyngier

parent 291e79c7e2

commit 91351b5dd0

1 changed files with 5 additions and 3 deletions

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drivers/irqchip/irq-realtek-rtl.c

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