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| author |   Rui Wang <rui.y.wang@intel.com> | 2016-08-17 16:00:34 +0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-08-18 11:45:18 +0200 |
| commit | 584c5c422f6c749ced1e0bc3c6837f650f64e1e1 (patch) | |
| tree | a4435a1214fa37c3d912955d50c77877bda4c95b /drivers/pci/setup-bus.c | |
| parent | x86/ioapic: Change prototype of acpi_ioapic_add() (diff) | |
| download | wireguard-linux-584c5c422f6c749ced1e0bc3c6837f650f64e1e1.tar.xz wireguard-linux-584c5c422f6c749ced1e0bc3c6837f650f64e1e1.zip | |
x86/ioapic: Support hot-removal of IOAPICs present during boot
IOAPICs present during system boot aren't added to ioapic_list,
thus are unable to be hot-removed. Fix it by calling
acpi_ioapic_add() during root bus enumeration.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: helgaas@kernel.org
Cc: linux-acpi@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: rjw@rjwysocki.net
Cc: tony.luck@intel.com
Link: http://lkml.kernel.org/r/1471420837-31003-3-git-send-email-rui.y.wang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index c74059e10a6d..ec538d3d2bd5 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -25,6 +25,7 @@ #include <linux/ioport.h> #include <linux/cache.h> #include <linux/slab.h> +#include <linux/acpi.h> #include "pci.h" unsigned int pci_flags; @@ -1852,8 +1853,10 @@ void __init pci_assign_unassigned_resources(void) { struct pci_bus *root_bus; - list_for_each_entry(root_bus, &pci_root_buses, node) + list_for_each_entry(root_bus, &pci_root_buses, node) { pci_assign_unassigned_root_bus_resources(root_bus); + acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge)); + } } void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge) |