From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40504 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751083AbdAWOf1 (ORCPT ); Mon, 23 Jan 2017 09:35:27 -0500 Subject: Patch "x86/ioapic: Restore IO-APIC irq_chip retrigger callback" has been added to the 4.4-stable tree To: rruslich@cisco.com, gregkh@linuxfoundation.org, tglx@linutronix.de Cc: , From: Date: Mon, 23 Jan 2017 15:34:58 +0100 Message-ID: <148518209820572@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 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 4.4-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-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 020eb3daaba2857b32c4cf4c82f503d6a00a67de Mon Sep 17 00:00:00 2001 From: Ruslan Ruslichenko Date: Tue, 17 Jan 2017 16:13:52 +0200 Subject: x86/ioapic: Restore IO-APIC irq_chip retrigger callback From: Ruslan Ruslichenko commit 020eb3daaba2857b32c4cf4c82f503d6a00a67de 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. Unfortunately the software resend fallback is not enabled on X86, so edge interrupts which are received during the lazy disabled state of the interrupt line are not retriggered and therefor lost. Restore the callbacks. [ tglx: Massaged changelog ] Fixes: d32932d02e18 ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces") Signed-off-by: Ruslan Ruslichenko Cc: xe-linux-external@cisco.com Link: http://lkml.kernel.org/r/1484662432-13580-1-git-send-email-rruslich@cisco.com Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/apic/io_apic.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1875,6 +1875,7 @@ 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, }; @@ -1886,6 +1887,7 @@ 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 rruslich@cisco.com are queue-4.4/x86-ioapic-restore-io-apic-irq_chip-retrigger-callback.patch