tree 1e812a2e9e2d63879555bb48303a8bc344be3864
parent 4daaa87c8f19c5f1978470e9e91b74d9e0fb0f8e
author Alan Stern <stern@rowland.harvard.edu> 1114113898 -0400
committer Greg Kroah-Hartman <gregkh@suse.de> 1119908624 -0700

[PATCH] USB UHCI: Use root-hub IRQs while suspended

This patch, which has as478b as a prerequisite, enables the uhci-hcd
driver to take advantage of root-hub IRQs rather than polling during the
time it is suspended.  (Unfortunately the hardware doesn't support
port-change interrupts while the controller is running.)  It also turns
off the driver's private timer while the controller is suspended, as it
isn't needed then.  The combined elimination of polling interrupts and
timer interrupts ought to be enough to allow some systems to save a
noticeable amount of power while they are otherwise idle.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>