linux-kernel - [tip:x86/apic] x86, irq, SFI: Release IOAPIC pin when PCI device is disabled

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Message-ID: <tip-8a3e533df17f821a4d25dd2969d2f90d7c168b46@git.kernel.org>
Date:	Sat, 21 Jun 2014 14:17:51 -0700
From:	tip-bot for Jiang Liu <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	mingo@...nel.org, konrad.wilk@...cle.com, rdunlap@...radead.org,
	tony.luck@...el.com, gregkh@...uxfoundation.org,
	tglx@...utronix.de, hpa@...or.com, jiang.liu@...ux.intel.com,
	grant.likely@...aro.org, linux-kernel@...r.kernel.org,
	yinghai@...nel.org, joro@...tes.org, benh@...nel.crashing.org,
	bhelgaas@...gle.com, rjw@...ysocki.net,
	paul.gortmaker@...driver.com
Subject: [tip:x86/apic] x86, irq, SFI:
  Release IOAPIC pin when PCI device is disabled

Commit-ID:  8a3e533df17f821a4d25dd2969d2f90d7c168b46
Gitweb:     http://git.kernel.org/tip/8a3e533df17f821a4d25dd2969d2f90d7c168b46
Author:     Jiang Liu <jiang.liu@...ux.intel.com>
AuthorDate: Mon, 9 Jun 2014 16:20:09 +0800
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Sat, 21 Jun 2014 23:05:44 +0200

x86, irq, SFI: Release IOAPIC pin when PCI device is disabled

Release IOAPIC pin associated with PCI device when the PCI device
is disabled.

Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Joerg Roedel <joro@...tes.org>
Cc: Paul Gortmaker <paul.gortmaker@...driver.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Grant Likely <grant.likely@...aro.org>
Cc: Rafael J. Wysocki <rjw@...ysocki.net>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Randy Dunlap <rdunlap@...radead.org>
Cc: Yinghai Lu <yinghai@...nel.org>
Link: http://lkml.kernel.org/r/1402302011-23642-41-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/pci/intel_mid_pci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c
index 337d165..09fece3 100644
--- a/arch/x86/pci/intel_mid_pci.c
+++ b/arch/x86/pci/intel_mid_pci.c
@@ -227,6 +227,12 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
 	return 0;
 }
 
+static void intel_mid_pci_irq_disable(struct pci_dev *dev)
+{
+	if (dev->irq > 0)
+		mp_unmap_irq(dev->irq);
+}
+
 struct pci_ops intel_mid_pci_ops = {
 	.read = pci_read,
 	.write = pci_write,
@@ -243,6 +249,7 @@ int __init intel_mid_pci_init(void)
 	pr_info("Intel MID platform detected, using MID PCI ops\n");
 	pci_mmcfg_late_init();
 	pcibios_enable_irq = intel_mid_pci_irq_enable;
+	pcibios_disable_irq = intel_mid_pci_irq_disable;
 	pci_root_ops = intel_mid_pci_ops;
 	pci_soc_mode = 1;
 	/* Continue with standard init */
--
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