From 5d9d01a30204c99edf99189018953ee84c5f5017 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 11 Oct 2012 02:50:10 +0000 Subject: usbnet: Support devices reporting idleness Some device types support a form of power management in which the device suggests to the host that the device may be suspended now. Support for that is best located in usbnet. Signed-off-by: Oliver Neukum Signed-off-by: David S. Miller --- drivers/net/usb/usbnet.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers/net/usb/usbnet.c') diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index fc9f578a1e25..f9819d10b1f9 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -1588,10 +1588,27 @@ int usbnet_resume (struct usb_interface *intf) tasklet_schedule (&dev->bh); } } + + if (test_and_clear_bit(EVENT_DEVICE_REPORT_IDLE, &dev->flags)) + usb_autopm_get_interface_no_resume(intf); + return 0; } EXPORT_SYMBOL_GPL(usbnet_resume); +/* + * Either a subdriver implements manage_power, then it is assumed to always + * be ready to be suspended or it reports the readiness to be suspended + * explicitly + */ +void usbnet_device_suggests_idle(struct usbnet *dev) +{ + if (!test_and_set_bit(EVENT_DEVICE_REPORT_IDLE, &dev->flags)) { + dev->intf->needs_remote_wakeup = 1; + usb_autopm_put_interface_async(dev->intf); + } +} +EXPORT_SYMBOL(usbnet_device_suggests_idle); /*-------------------------------------------------------------------------*/ -- cgit v1.2.3-59-g8ed1b