irqchip/eznps: Acknowledge NPS_IPI before calling the handler

IPI_IRQ (also TIMER0_IRQ) should be acked before the action->handler is called
in handle_percpu_devid_irq.

The IPI irq is edge sensitive and we might miss an IPI interrupt if it is
triggered again while the handler runs.

Fixes: 44df427c894a ("irqchip: add nps Internal and external irqchips")
Signed-off-by: Noam Camus <noamca@mellanox.com>
Cc: marc.zyngier@arm.com
Cc: jason@lakedaemon.net
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1476364532-12634-1-git-send-email-noamca@mellanox.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/irqchip/irq-eznps.c b/drivers/irqchip/irq-eznps.c
index efbf0e4304b7073d5aa12bfa97a1d727aace81b7..ebc2b0b15f677e4bac6afef3319a4d9467cc5bd6 100644 (file)
--- a/drivers/irqchip/irq-eznps.c
+++ b/drivers/irqchip/irq-eznps.c
@@ -85,7 +85,7 @@ static void nps400_irq_eoi_global(struct irq_data *irqd)
        nps_ack_gic();
 }
 
-static void nps400_irq_eoi(struct irq_data *irqd)
+static void nps400_irq_ack(struct irq_data *irqd)
 {
        unsigned int __maybe_unused irq = irqd_to_hwirq(irqd);
 
@@ -103,7 +103,7 @@ static struct irq_chip nps400_irq_chip_percpu = {
        .name           = "NPS400 IC",
        .irq_mask       = nps400_irq_mask,
        .irq_unmask     = nps400_irq_unmask,
-       .irq_eoi        = nps400_irq_eoi,
+       .irq_ack        = nps400_irq_ack,
 };
 
 static int nps400_irq_map(struct irq_domain *d, unsigned int virq,