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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 14d4dced1def..d544e3aaf761 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -4121,7 +4121,7 @@ static int sony_pic_enable(struct acpi_device *device,
                 resource->res3.data.irq.sharable = ACPI_SHARED;
 
                 resource->res4.type = ACPI_RESOURCE_TYPE_END_TAG;
-
+                resource->res4.length = sizeof(struct acpi_resource);
         }
         /* setup Type 2/3 resources */
         else {
@@ -4140,6 +4140,7 @@ static int sony_pic_enable(struct acpi_device *device,
                 resource->res2.data.irq.sharable = ACPI_SHARED;
 
                 resource->res3.type = ACPI_RESOURCE_TYPE_END_TAG;
+                resource->res3.length = sizeof(struct acpi_resource);
         }
 
         /* Attempt to set the resource */