于 2012/11/13 19:07, Sergei Shtylyov 写道:
Hello.
On 13-11-2012 12:00, Lan Tianyu wrote:
This patch is to register usb port's acpi power resources. Create
link between usb port device and its acpi power resource.
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
[...]
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index cef4252..c58ebc0 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -216,6 +216,28 @@ static struct acpi_bus_type usb_acpi_bus = {
.find_device = usb_acpi_find_device,
};
+int usb_acpi_register_power_resources(struct device *dev)
+{
+ acpi_handle port_handle = DEVICE_ACPI_HANDLE(dev);
+
+ if (!port_handle)
+ return -ENODEV;
+
+ if (acpi_power_resource_register_device(dev, port_handle) < 0)
+ return -ENODEV;
+ return 0;
+}
+
+void usb_acpi_unregister_power_resources(struct device *dev)
+{
+ acpi_handle port_handle = DEVICE_ACPI_HANDLE(dev);
+
+ if (!port_handle)
+ return;
+
+ acpi_power_resource_register_device(dev, port_handle);
I thinbk you have been askied already, but shouldn't it be
acpi_power_resource_unregister_device()?
Oh. Sorry. Too focus on the other modification. Thanks for your reminder.
WBR, Sergei
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Best regards
Tianyu Lan
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
