This is a note to let you know that I've just added the patch titled
irqchip/eznps: Acknowledge NPS_IPI before calling the handler
to the 4.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
irqchip-eznps-acknowledge-nps_ipi-before-calling-the-handler.patch
and it can be found in the queue-4.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c0ca8df717061ae3d2ea624024033103c64210ae Mon Sep 17 00:00:00 2001
From: Noam Camus <noamca@xxxxxxxxxxxx>
Date: Thu, 13 Oct 2016 16:15:32 +0300
Subject: irqchip/eznps: Acknowledge NPS_IPI before calling the handler
From: Noam Camus <noamca@xxxxxxxxxxxx>
commit c0ca8df717061ae3d2ea624024033103c64210ae upstream.
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@xxxxxxxxxxxx>
Cc: marc.zyngier@xxxxxxx
Cc: jason@xxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/1476364532-12634-1-git-send-email-noamca@xxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/irqchip/irq-eznps.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/irqchip/irq-eznps.c
+++ b/drivers/irqchip/irq-eznps.c
@@ -85,7 +85,7 @@ static void nps400_irq_eoi_global(struct
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_p
.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,
Patches currently in stable-queue which might be from noamca@xxxxxxxxxxxx are
queue-4.8/irqchip-eznps-acknowledge-nps_ipi-before-calling-the-handler.patch
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