Patch "x86/ioapic: Restore IO-APIC irq_chip retrigger callback" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

x86/ioapic: Restore IO-APIC irq_chip retrigger callback

to the 4.9-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:
x86-ioapic-restore-io-apic-irq_chip-retrigger-callback.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Ruslan Ruslichenko <[email protected]>
Date: Tue, 17 Jan 2017 16:13:52 +0200
Subject: x86/ioapic: Restore IO-APIC irq_chip retrigger callback

From: Ruslan Ruslichenko <[email protected]>

commit a9b4f08770b415f30f2fb0f8329a370c8f554aa3 upstream.

commit d32932d02e18 removed the irq_retrigger callback from the IO-APIC chip and did not add it to the new IO-APIC-IR irq chip.

There is no harm because the interrupts are resent in software when the retrigger callback is NULL, but it's less efficient. So restore them.

[ tglx: Massaged changelog ]

---
 arch/x86/kernel/apic/io_apic.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -1876,6 +1876,7 @@ static struct irq_chip ioapic_chip __rea
 	.irq_ack		= irq_chip_ack_parent,
 	.irq_eoi		= ioapic_ack_level,
 	.irq_set_affinity	= ioapic_set_affinity,
+	.irq_retrigger		= irq_chip_retrigger_hierarchy,
 	.flags			= IRQCHIP_SKIP_SET_WAKE,
 };
 

@@ -1887,6 +1888,7 @@ static struct irq_chip ioapic_ir_chip __
 	.irq_ack		= irq_chip_ack_parent,
 	.irq_eoi		= ioapic_ir_ack_level,
 	.irq_set_affinity	= ioapic_set_affinity,
+	.irq_retrigger		= irq_chip_retrigger_hierarchy,
 	.flags			= IRQCHIP_SKIP_SET_WAKE,
 };
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/x86-ioapic-restore-io-apic-irq_chip-retrigger-callback.patch