From: Marc Zyngier maz@kernel.org
commit 2a7313dc81e88adc7bb09d0f056985fa8afc2b89 upstream.
When converting the driver to using handle_percpu_devid_irq, we forgot to repaint the irq_eoi() callback into irq_ack(), as handle_percpu_devid_fasteoi_ipi() was actually using EOI really early in the handling. Yes this was a stupid idea.
Fix this by using the HW ack method as irq_ack().
Fixes: e52e73b7e9f7 ("irqchip/armada-370-xp: Make IPIs use handle_percpu_devid_irq()") Reported-by: Steffen Trumtrar s.trumtrar@pengutronix.de Tested-by: Steffen Trumtrar s.trumtrar@pengutronix.de Signed-off-by: Marc Zyngier maz@kernel.org Cc: Valentin Schneider valentin.schneider@arm.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/87tuiexq5f.fsf@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/irqchip/irq-armada-370-xp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -359,16 +359,16 @@ static void armada_370_xp_ipi_send_mask( ARMADA_370_XP_SW_TRIG_INT_OFFS); }
-static void armada_370_xp_ipi_eoi(struct irq_data *d) +static void armada_370_xp_ipi_ack(struct irq_data *d) { writel(~BIT(d->hwirq), per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_CAUSE_OFFS); }
static struct irq_chip ipi_irqchip = { .name = "IPI", + .irq_ack = armada_370_xp_ipi_ack, .irq_mask = armada_370_xp_ipi_mask, .irq_unmask = armada_370_xp_ipi_unmask, - .irq_eoi = armada_370_xp_ipi_eoi, .ipi_send_mask = armada_370_xp_ipi_send_mask, };