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USB: EHCI: EHCI 1.1 addendum: Basic LPM feature support

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With this patch, the LPM capable EHCI host controller can put device
into L1 sleep state which is a mode that can enter/exit quickly, and
reduce power consumption.

Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alek Du
2010-06-04 15:47:55 +08:00
committed by Greg Kroah-Hartman
parent aa4d834298
commit 48f2497014
7 changed files with 134 additions and 2 deletions
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4
drivers/usb/core/hub.c
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@@ -2880,7 +2880,9 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
}
retval = 0;
/* notify HCD that we have a device connected and addressed */
if (hcd->driver->update_device)
hcd->driver->update_device(hcd, udev);
fail:
if (retval) {
hub_port_disable(hub, port1, 0);