usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1
authorRoger Quadros <rogerq@ti.com>
Mon, 4 Aug 2014 09:44:46 +0000 (12:44 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 5 Sep 2014 23:28:37 +0000 (16:28 -0700)
commit6a5335b46b463c469ca03ddb706c0562e881d2ed
treeef765725540cccd89fd97420da4bb8dc671a0487
parentd0e6e29e2c9820d39b83fa275bf68c7c8bc7935e
usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1

commit bdd405d2a5287bdb9b04670ea255e1f122138e66 upstream.

If user specifies that USB autosuspend must be disabled by module
parameter "usbcore.autosuspend=-1" then we must prevent
autosuspend of USB hub devices as well.

commit 596d789a211d introduced in v3.8 changed the original behaivour
and stopped respecting the usbcore.autosuspend parameter for hubs.

Fixes: 596d789a211d "USB: set hub's default autosuspend delay as 0"

Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Michael Welling <mwelling@emacinc.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/hub.c