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47 lines
1.7 KiB
Diff
47 lines
1.7 KiB
Diff
From 1dab2d7f80fa955ff493785033008b2c17f7cc53 Mon Sep 17 00:00:00 2001
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From: Ruslan Ruslichenko <rruslich@cisco.com>
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Date: Tue, 17 Jan 2017 16:13:52 +0200
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Subject: [PATCH] x86/ioapic: Restore IO-APIC irq_chip retrigger callback
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commit 020eb3daaba2857b32c4cf4c82f503d6a00a67de upstream.
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commit d32932d02e18 removed the irq_retrigger callback from the IO-APIC
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chip and did not add it to the new IO-APIC-IR irq chip.
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Unfortunately the software resend fallback is not enabled on X86, so edge
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interrupts which are received during the lazy disabled state of the
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interrupt line are not retriggered and therefor lost.
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Restore the callbacks.
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[ tglx: Massaged changelog ]
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Fixes: d32932d02e18 ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces")
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Signed-off-by: Ruslan Ruslichenko <rruslich@cisco.com>
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Cc: xe-linux-external@cisco.com
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Link: http://lkml.kernel.org/r/1484662432-13580-1-git-send-email-rruslich@cisco.com
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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arch/x86/kernel/apic/io_apic.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/arch/x86/kernel/apic/io_apic.c
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+++ b/arch/x86/kernel/apic/io_apic.c
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@@ -1875,6 +1875,7 @@ static struct irq_chip ioapic_chip __rea
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.irq_ack = irq_chip_ack_parent,
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.irq_eoi = ioapic_ack_level,
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.irq_set_affinity = ioapic_set_affinity,
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+ .irq_retrigger = irq_chip_retrigger_hierarchy,
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.flags = IRQCHIP_SKIP_SET_WAKE,
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};
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@@ -1886,6 +1887,7 @@ static struct irq_chip ioapic_ir_chip __
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.irq_ack = irq_chip_ack_parent,
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.irq_eoi = ioapic_ir_ack_level,
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.irq_set_affinity = ioapic_set_affinity,
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+ .irq_retrigger = irq_chip_retrigger_hierarchy,
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.flags = IRQCHIP_SKIP_SET_WAKE,
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};
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