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ACPI: dock: combine add|alloc_dock_dependent_device (v2)

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There's no real need to have a separate allocation step when adding
a dock dependent device.

Combining the two functions is both logical and helps with legibility.

Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alex Chiang 2009-10-19 15:14:29 -06:00 committed by Len Brown
parent 5f46c2f25c
commit f69cfdd24a
1 changed files with 19 additions and 36 deletions
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55
drivers/acpi/dock.c
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@ -93,40 +93,30 @@ struct dock_dependent_device {
* Dock Dependent device functions *
*****************************************************************************/
/**
* alloc_dock_dependent_device - allocate and init a dependent device
* @handle: the acpi_handle of the dependent device
* add_dock_dependent_device - associate a device with the dock station
* @ds: The dock station
* @handle: handle of the dependent device
*
* Allocate memory for a dependent device structure for a device referenced
* by the acpi handle
* Add the dependent device to the dock's dependent device list.
*/
static struct dock_dependent_device *
alloc_dock_dependent_device(acpi_handle handle)
static int
add_dock_dependent_device(struct dock_station *ds, acpi_handle handle)
{
struct dock_dependent_device *dd;
dd = kzalloc(sizeof(*dd), GFP_KERNEL);
if (dd) {
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
INIT_LIST_HEAD(&dd->hotplug_list);
}
return dd;
}
if (!dd)
return -ENOMEM;
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
INIT_LIST_HEAD(&dd->hotplug_list);
/**
* add_dock_dependent_device - associate a device with the dock station
* @ds: The dock station
* @dd: The dependent device
*
* Add the dependent device to the dock's dependent device list.
*/
static void
add_dock_dependent_device(struct dock_station *ds,
struct dock_dependent_device *dd)
{
spin_lock(&ds->dd_lock);
list_add_tail(&dd->list, &ds->dependent_devices);
spin_unlock(&ds->dd_lock);
return 0;
}
/**
@ -826,7 +816,6 @@ find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv)
acpi_status status;
acpi_handle tmp, parent;
struct dock_station *ds = context;
struct dock_dependent_device *dd;
status = acpi_bus_get_ejd(handle, &tmp);
if (ACPI_FAILURE(status)) {
@ -840,11 +829,9 @@ find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv)
goto fdd_out;
}
if (tmp == ds->handle) {
dd = alloc_dock_dependent_device(handle);
if (dd)
add_dock_dependent_device(ds, dd);
}
if (tmp == ds->handle)
add_dock_dependent_device(ds, handle);
fdd_out:
return AE_OK;
}
@ -959,7 +946,6 @@ static struct attribute_group dock_attribute_group = {
static int dock_add(acpi_handle handle)
{
int ret;
struct dock_dependent_device *dd;
struct dock_station *dock_station;
struct platform_device *dock_device;
@ -1008,12 +994,9 @@ static int dock_add(acpi_handle handle)
NULL);
/* add the dock station as a device dependent on itself */
dd = alloc_dock_dependent_device(handle);
if (!dd) {
ret = -ENOMEM;
ret = add_dock_dependent_device(dock_station, handle);
if (ret)
goto err_rmgroup;
}
add_dock_dependent_device(dock_station, dd);
dock_station_count++;
list_add(&dock_station->sibling, &dock_stations);