OHCI: disallow autostop when wakeup is not available

This patch (as822) prevents the OHCI autostop mechanism from kicking in
if the root hub is not able or not allowed to issue wakeup requests.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index 6f113596af66..da09e7930c1b 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -422,7 +422,8 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
                                 ohci->autostop = 0;
                                 ohci->next_statechange = jiffies +
                                                 STATECHANGE_DELAY;
-                        } else if (time_after_eq (jiffies,
+                        } else if (device_may_wakeup(&hcd->self.root_hub->dev)
+                                        && time_after_eq(jiffies,
                                                 ohci->next_statechange)
                                         && !ohci->ed_rm_list
                                         && !(ohci->hc_control &