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authorYinghai Lu <yinghai@kernel.org>2013-03-23 19:16:37 (GMT)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-03-24 00:00:38 (GMT)
commitf084dbb939070281be7c882db63a4a428c51fcf4 (patch)
treebfda012c8613e30ff2bd6e41255af7d3533b497e /drivers/acpi/pci_link.c
parenteccc534378e74030b31cfe10f1188df06f7f680a (diff)
downloadlinux-fsl-qoriq-f084dbb939070281be7c882db63a4a428c51fcf4.tar.xz
ACPI: Set length even for TYPE_END_TAG acpi resource
Found with a network device in QEMU/KVM guest not working anymore. Bisected to commit c13085e5 ACPICA: Resource Mgr: Prevent infinite loops in resource walks That commit will check acpi_resource length strictly which causes acpi_set_current_resources to return failure and IRQ for PCI devices is not set properly. Set length for all those TYPE_END_TAG acpi_resources. [rjw: Changelog] Bisected-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/pci_link.c')
-rw-r--r--drivers/acpi/pci_link.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index ab764ed..2652a61 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -354,6 +354,7 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
}
resource->end.type = ACPI_RESOURCE_TYPE_END_TAG;
+ resource->end.length = sizeof(struct acpi_resource);
/* Attempt to set the resource */
status = acpi_set_current_resources(link->device->handle, &buffer);