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ACPI: simplify building device HID/CID list

Browse source 
Minor code cleanup, no functional change.  Instead of remembering
what HIDs & CIDs to add later, just add them immediately.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas 2009-09-21 13:35:40 -06:00 committed by Len Brown
parent 6622d8cee7
commit 57f3674f5e
1 changed files with 23 additions and 33 deletions
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56
drivers/acpi/scan.c
View file

@ -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)