[3.13.y.z extended stable] Patch "USB: fix build error with CONFIG_PM_RUNTIME disabled" has been added to staging queue

Kamal Mostafa kamal at canonical.com
Wed Oct 1 16:42:37 UTC 2014

This is a note to let you know that I have just added a patch titled

    USB: fix build error with CONFIG_PM_RUNTIME disabled

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:


This patch is scheduled to be released in version

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see



>From 5af2beec977bb3a91a8bb36491524c433c03d0a0 Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Date: Wed, 27 Aug 2014 16:55:29 -0700
Subject: USB: fix build error with CONFIG_PM_RUNTIME disabled

commit a9ef803d740bfadf5e505fbc57efa57692e27025 upstream.

commit bdd405d2a528 ("usb: hub: Prevent hub autosuspend if
usbcore.autosuspend is -1") causes a build error if CONFIG_PM_RUNTIME is
disabled.  Fix that by doing a simple #ifdef guard around it.

Reported-by: Stephen Rothwell <sfr at canb.auug.org.au>
Reported-by: kbuild test robot <fengguang.wu at intel.com>
Cc: Roger Quadros <rogerq at ti.com>
Cc: Michael Welling <mwelling at emacinc.com>
Cc: Alan Stern <stern at rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
 drivers/usb/core/hub.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 79c24e6..a80e195 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1705,8 +1705,10 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	 * - If user has indicated to prevent autosuspend by passing
 	 *   usbcore.autosuspend = -1 then keep autosuspend disabled.
 	if (hdev->dev.power.autosuspend_delay >= 0)
 		pm_runtime_set_autosuspend_delay(&hdev->dev, 0);

 	 * Hubs have proper suspend/resume support, except for root hubs

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