From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
This patch has been added to the 3.12 stable tree. If you have any
objections, please let us 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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