From: Zhao Yakui <yakui.zhao@xxxxxxxxx> The _ADR object is used to provide OSPM with the address of one device on its parent bus. In course of finding ACPI handle for the corresponding PCI device, we will firstly evaluate the _ADR object and then compare the two addresses to see whether it is the target ACPI device. But for one PCI device(0000:00:00.0) under the PCI root bridge, the corresponding address will be constructed as zero.In such case maybe the ACPI device without _ADR object will be misdetected and then be used to create the relationship between PCI device and ACPI device. https://bugzilla.kernel.org/show_bug.cgi?id=16422 Signed-off-by: Zhao Yakui <yakui.zhao@xxxxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/acpi/glue.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 4af6301..78b0164 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -100,7 +100,8 @@ do_acpi_find_child(acpi_handle handle, u32 lvl, void *context, void **rv) status = acpi_get_object_info(handle, &info); if (ACPI_SUCCESS(status)) { - if (info->address == find->address) + if ((info->address == find->address) + && (info->valid & ACPI_VALID_ADR)) find->handle = handle; kfree(info); } -- 1.7.2.1.95.g3d045 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
