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authorRui Wang <rui.y.wang@intel.com>2017-02-28 14:34:29 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-03-01 10:51:41 +0100
commitf2ae5da726172fcf82f7be801489dd585f6a38eb (patch)
tree35a6ee0f1d018f201f3ab0c145c1fc61d84b49ec /drivers/acpi/internal.h
parentx86/PCI: Implement pcibios_release_device to release IRQ from IOAPIC (diff)
downloadlinux-f2ae5da726172fcf82f7be801489dd585f6a38eb.tar.xz
linux-f2ae5da726172fcf82f7be801489dd585f6a38eb.zip
x86/ioapic: Split IOAPIC hot-removal into two steps
The hot removal of IOAPIC is handling PCI and ACPI removal in one go. That only works when the PCI drivers released the interrupt resources, but breaks when a IOAPIC interrupt is still associated to a PCI device. The new pcibios_release_device() callback allows to solve that problem by splitting the removal into two steps: 1) PCI removal: Release all PCI resources including eventually not yet released IOAPIC interrupts via the new pcibios_release_device() callback. 2) ACPI removal: After release of all PCI resources the ACPI resources can be released without issue. [ tglx: Rewrote changelog ] Signed-off-by: Rui Wang <rui.y.wang@intel.com> Cc: tony.luck@intel.com Cc: linux-pci@vger.kernel.org Cc: rjw@rjwysocki.net Cc: linux-acpi@vger.kernel.org Cc: fengguang.wu@intel.com Cc: helgaas@kernel.org Cc: kbuild-all@01.org Cc: bhelgaas@google.com Link: http://lkml.kernel.org/r/1488288869-31290-3-git-send-email-rui.y.wang@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/acpi/internal.h')
-rw-r--r--drivers/acpi/internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 219b90bc0922..f15900132912 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -41,8 +41,10 @@ void acpi_gpe_apply_masked_gpes(void);
void acpi_container_init(void);
void acpi_memory_hotplug_init(void);
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
+void pci_ioapic_remove(struct acpi_pci_root *root);
int acpi_ioapic_remove(struct acpi_pci_root *root);
#else
+static inline void pci_ioapic_remove(struct acpi_pci_root *root) { return; }
static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; }
#endif
#ifdef CONFIG_ACPI_DOCK