diff options
| author | Lan Tianyu <tianyu.lan@intel.com> | 2013-01-23 04:26:29 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-25 10:12:19 -0800 |
| commit | 971fcd492cebf544714f12d94549d2f0d2002645 (patch) | |
| tree | 553a48486114b3b3b1507cf5dc391f24a464912f /drivers/usb/core/hub.h | |
| parent | 6802771bba0455a751d8f4ece7587585be3eaa2f (diff) | |
| download | linux-971fcd492cebf544714f12d94549d2f0d2002645.tar.bz2 | |
usb: add runtime pm support for usb port device
This patch is to add runtime pm callback for usb port device.
Set/clear PORT_POWER feature in the resume/suspend callback.
Add portnum for struct usb_port to record port number. Do
pm_rumtime_get_sync/put(portdev) when a device is plugged/unplugged
to prevent it from being powered off when it is active.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hub.h')
| -rw-r--r-- | drivers/usb/core/hub.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index c472058f8f27..452e5cd7b249 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -79,12 +79,14 @@ struct usb_hub { * @dev: generic device interface * @port_owner: port's owner * @connect_type: port's connect type + * @portnum: port index num based one */ struct usb_port { struct usb_device *child; struct device dev; struct dev_state *port_owner; enum usb_port_connect_type connect_type; + u8 portnum; }; #define to_usb_port(_dev) \ @@ -94,4 +96,6 @@ extern int usb_hub_create_port_device(struct usb_hub *hub, int port1); extern void usb_hub_remove_port_device(struct usb_hub *hub, int port1); +extern int usb_hub_set_port_power(struct usb_device *hdev, + int port1, bool set); |