On Thu, 2014-05-22 at 11:51 +0300, Mika Westerberg wrote: > On Wed, May 21, 2014 at 10:43:07PM +0800, Zhang Rui wrote: > > On 三, 2014-05-21 at 11:52 +0300, Mika Westerberg wrote: > > > On Thu, May 15, 2014 at 02:44:14PM +0800, Zhang Rui wrote: > > > > For some ACPI device objects, they represent master devices, > > > > and their children devices are enumerated by bus controller drivers > > > > for the buses they are on. > > > > > > > > In this case, we do not want to enumerate their children devices to > > > > platform bus explicitly in acpi scan code. > > > > > > > > Thus a new flag .is_master_device is introduced in this patch. > > > > > > > > For devices with this flag set, we will not do default enumeration > > > > for their children. > > > > > > Is there any particular reason we would like to enumerate everything > > > below the first device by default? > > > > we do not enumerate everything below the first device by default, we > > just enumerate all the devices with _HID. > > OK. > > > But if a device has _HID and it is enumerated by its parents to a > > separate bus, we need this flag set for its parent. > > How about checking if the device has *SerialBus() connector and in such > case skip the device (given that it is not listed in a special list, > like acpi_platform_device_ids)? This sounds like a good idea. I think we can just ignore devices with ACPI_RESOURCE_TYPE_SERIAL_BUS resources, and this can be done in drivers/acpi/scan.c for all _HID devices w/o handler attached, right? thanks, rui -- 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
