1. 21 12月, 2006 1 次提交
    • Z
      ACPI: use PNPID:instance_no as bus_id of ACPI device · e49bd2dd
      Zhang Rui 提交于
      Previously we used the device name in the DSDT, but would
      crash upon encountering a duplicate. Also, exposing the
      DSDT device name to the user in a patch isn't a good idea,
      because it is arbitrary.
      
      After some discussion, we finally decided to use
      "PNPID:instance_no" as the bus_id of ACPI devices.
      
      Two attributes for each device are added at the same time,
      the full pathname in ACPI namespace and hardware_id if it has.
      
      NOTE:	acpi_bus_id_list is used to keep the information of PNPID
      	and instance number of the given PNPID. Loop the
      	acpi_bus_id_list to find the instance_no of the	same PNPID
      	when register a device. If failed, i.e. we don't have a
      	node with this PNPID, allocate one and link it to this list.
      
      NOTE:	Now I don't take the memory free work in charge.
      	If necessary, I can add a reference count in
      	struct acpi_device_bus_id, and check the reference and
      	when unregister a device, i.e. memory is freed when
      	the reference count of a given PNPID is 0.
      Signed-off-by: NLi Shaohua <shaohua.li@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      e49bd2dd
  2. 16 12月, 2006 12 次提交
  3. 14 12月, 2006 27 次提交