diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2007-09-10 11:31:43 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 14:55:26 -0700 |
| commit | 5ad4f71e2f19a06f738463da1f09ea7fda3a3db2 (patch) | |
| tree | 02c6b1413fdcb01e7086ae2dfb2b84796ce9b775 /drivers/usb/core/generic.c | |
| parent | 7477120e34eef65a530cfb3fea5fe612c89669e5 (diff) | |
USB: move decision to ignore FREEZE events
This patch (as987) changes the way FREEZE and PRETHAW suspend events
are handled in usbcore. The decision about whether or not to ignore
them for non-root devices is pushed down into the USB-device driver,
instead of being made in the core code.
This is appropriate, since devices exported to a virtualized guest or
over a network may indeed need to handle these types of suspend, even
though normal devices don't.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/generic.c')
| -rw-r--r-- | drivers/usb/core/generic.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index 9148b69785c5..c1cb94e9f242 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -206,8 +206,13 @@ static int generic_suspend(struct usb_device *udev, pm_message_t msg) */ if (!udev->parent) rc = hcd_bus_suspend(udev); + + /* Non-root devices don't need to do anything for FREEZE or PRETHAW */ + else if (msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW) + rc = 0; else rc = usb_port_suspend(udev); + return rc; } |