Messages in this thread Patch in this message | | | Subject | [PATCH V2 3/4] ACPI battery: support async resume | From | Zhang Rui <> | Date | Fri, 24 Jul 2009 11:02:10 +0800 |
| |
ACPI battery supports device async actions.
Create an async domain for every ACPI battery device, so that ACPI battery can be resumed asynchronously.
Signed-off-by: Zhang Rui <rui.zhang@intel.com> --- drivers/acpi/battery.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
Index: linux-2.6/drivers/acpi/battery.c =================================================================== --- linux-2.6.orig/drivers/acpi/battery.c +++ linux-2.6/drivers/acpi/battery.c @@ -829,6 +829,17 @@ static int acpi_battery_add(struct acpi_ strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); device->driver_data = battery; mutex_init(&battery->lock); + + /* + * dev_async_register must be called before any of its child + * device being registered, i.e. power supply sysfs class device. + */ + result = dev_async_register(&device->dev, DEV_ASYNC_RESUME); + if (result) { + kfree(battery); + return result; + } + acpi_battery_update(battery); #ifdef CONFIG_ACPI_PROCFS_POWER result = acpi_battery_add_fs(device); @@ -841,6 +852,7 @@ static int acpi_battery_add(struct acpi_ #ifdef CONFIG_ACPI_PROCFS_POWER acpi_battery_remove_fs(device); #endif + dev_async_unregister(&device->dev); kfree(battery); } return result; @@ -859,6 +871,7 @@ static int acpi_battery_remove(struct ac #ifdef CONFIG_ACPI_SYSFS_POWER sysfs_remove_battery(battery); #endif + dev_async_unregister(&device->dev); mutex_destroy(&battery->lock); kfree(battery); return 0;
| |