diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2013-03-23 19:16:37 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-03-24 00:00:38 (GMT) |
| commit | f084dbb939070281be7c882db63a4a428c51fcf4 (patch) | |
| tree | bfda012c8613e30ff2bd6e41255af7d3533b497e | |
| parent | eccc534378e74030b31cfe10f1188df06f7f680a (diff) | |
| download | linux-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>
| -rw-r--r-- | drivers/acpi/pci_link.c | 1 | ||||
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 3 | ||||
| -rw-r--r-- | drivers/pnp/pnpacpi/rsparser.c | 1 |
3 files changed, 4 insertions, 1 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); diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 14d4dce..d544e3a 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 */ diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index b8f4ea7..9847ab1 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -634,6 +634,7 @@ int pnpacpi_build_resource_template(struct pnp_dev *dev, } /* resource will pointer the end resource now */ resource->type = ACPI_RESOURCE_TYPE_END_TAG; + resource->length = sizeof(struct acpi_resource); return 0; } |