diff options
| -rw-r--r-- | drivers/acpi/scan.c | 56 |
1 files changed, 23 insertions, 33 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index da11b5379dc..468921bed22 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1016,21 +1016,19 @@ static void acpi_add_id(struct acpi_device *device, const char *dev_id) static void acpi_device_set_id(struct acpi_device *device) { - struct acpi_device_info *info = NULL; - char *hid = NULL; - struct acpica_device_id_list *cid_list = NULL; - char *cid_add = NULL; acpi_status status; + struct acpi_device_info *info; + struct acpica_device_id_list *cid_list; int i; switch (device->device_type) { case ACPI_BUS_TYPE_DEVICE: if (ACPI_IS_ROOT_DEVICE(device)) { - hid = ACPI_SYSTEM_HID; + acpi_add_id(device, ACPI_SYSTEM_HID); break; } else if (ACPI_IS_ROOT_DEVICE(device->parent)) { /* \_SB_, the only root-level namespace device */ - hid = ACPI_BUS_HID; + acpi_add_id(device, ACPI_BUS_HID); strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME); strcpy(device->pnp.device_class, ACPI_BUS_CLASS); break; @@ -1043,41 +1041,43 @@ static void acpi_device_set_id(struct acpi_device *device) } if (info->valid & ACPI_VALID_HID) - hid = info->hardware_id.string; - if (info->valid & ACPI_VALID_CID) + acpi_add_id(device, info->hardware_id.string); + if (info->valid & ACPI_VALID_CID) { cid_list = &info->compatible_id_list; + for (i = 0; i < cid_list->count; i++) + acpi_add_id(device, cid_list->ids[i].string); + } if (info->valid & ACPI_VALID_ADR) { device->pnp.bus_address = info->address; device->flags.bus_address = 1; } - /* If we have a video/bay/dock device, add our selfdefined - HID to the CID list. Like that the video/bay/dock drivers - will get autoloaded and the device might still match - against another driver. - */ + /* + * Some devices don't reliably have _HIDs & _CIDs, so add + * synthetic HIDs to make sure drivers can find them. + */ if (acpi_is_video_device(device)) - cid_add = ACPI_VIDEO_HID; + acpi_add_id(device, ACPI_VIDEO_HID); else if (ACPI_SUCCESS(acpi_bay_match(device))) - cid_add = ACPI_BAY_HID; + acpi_add_id(device, ACPI_BAY_HID); else if (ACPI_SUCCESS(acpi_dock_match(device))) - cid_add = ACPI_DOCK_HID; + acpi_add_id(device, ACPI_DOCK_HID); break; case ACPI_BUS_TYPE_POWER: - hid = ACPI_POWER_HID; + acpi_add_id(device, ACPI_POWER_HID); break; case ACPI_BUS_TYPE_PROCESSOR: - hid = ACPI_PROCESSOR_OBJECT_HID; + acpi_add_id(device, ACPI_PROCESSOR_OBJECT_HID); break; case ACPI_BUS_TYPE_THERMAL: - hid = ACPI_THERMAL_HID; + acpi_add_id(device, ACPI_THERMAL_HID); break; case ACPI_BUS_TYPE_POWER_BUTTON: - hid = ACPI_BUTTON_HID_POWERF; + acpi_add_id(device, ACPI_BUTTON_HID_POWERF); break; case ACPI_BUS_TYPE_SLEEP_BUTTON: - hid = ACPI_BUTTON_HID_SLEEPF; + acpi_add_id(device, ACPI_BUTTON_HID_SLEEPF); break; } @@ -1088,18 +1088,8 @@ static void acpi_device_set_id(struct acpi_device *device) * This generic ID isn't useful for driver binding, but it provides * the useful property that "every acpi_device has an ID." */ - if (!hid && !cid_list && !cid_add) - hid = "device"; - - if (hid) - acpi_add_id(device, hid); - if (cid_list) - for (i = 0; i < cid_list->count; i++) - acpi_add_id(device, cid_list->ids[i].string); - if (cid_add) - acpi_add_id(device, cid_add); - - kfree(info); + if (list_empty(&device->pnp.ids)) + acpi_add_id(device, "device"); } static int acpi_device_set_context(struct acpi_device *device) |