[PATCH 3.12 031/142] USB: fix build error with CONFIG_PM_RUNTIME disabled

[Jiri Slaby]

From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

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@xxxxxxxxxxxxxxxx>
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Cc: Roger Quadros <rogerq@xxxxxx>
Cc: Michael Welling <mwelling@xxxxxxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
 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 156fe93fb3d9..721de375c543 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1708,8 +1708,10 @@ 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.
 	 */
+#ifdef CONFIG_PM_RUNTIME
 	if (hdev->dev.power.autosuspend_delay >= 0)
 		pm_runtime_set_autosuspend_delay(&hdev->dev, 0);
+#endif
 
 	/*
 	 * Hubs have proper suspend/resume support, except for root hubs
-- 
2.1.0

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