On Tue, 2010-07-13 at 11:36 +0800, Zhao, Yakui wrote: > 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. This patch is to fix the following bug: https://bugzilla.kernel.org/show_bug.cgi?id=16422 > > Signed-off-by: Zhao Yakui <yakui.zhao@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); > } -- 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
