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irqchip: or1k-pic: Undefine mask_ack for level triggered hardware

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The mask_ack operation clears the interrupt by writing to the PICSR
register.  This we don't want for level triggered interrupt because
it does not actually clear the interrupt on the source hardware.

This was causing issues in qemu with multi core setups where
interrupts would continue to fire even though they had been cleared in
PICSR.

Just remove the mask_ack operation.

Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Stafford Horne 2022-06-15 08:54:26 +09:00
parent 03c765b0e3
commit 8520501346
1 changed files with 0 additions and 1 deletions
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drivers/irqchip/irq-or1k-pic.c
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@ -66,7 +66,6 @@ static struct or1k_pic_dev or1k_pic_level = {
.name = "or1k-PIC-level",
.irq_unmask = or1k_pic_unmask,
.irq_mask = or1k_pic_mask,
.irq_mask_ack = or1k_pic_mask_ack,
},
.handle = handle_level_irq,
.flags = IRQ_LEVEL | IRQ_NOPROBE,