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| author | James Morris <james.l.morris@oracle.com> | 2012-05-04 12:46:40 +1000 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2012-05-04 12:46:40 +1000 |
| commit | 898bfc1d46bd76f8ea2a0fbd239dd2073efe2aa3 (patch) | |
| tree | e6e666085abe674dbf6292555961fe0a0f2e2d2f /drivers/usb/core/hcd.c | |
| parent | 08162e6a23d476544adfe1164afe9ea8b34ab859 (diff) | |
| parent | 69964ea4c7b68c9399f7977aa5b9aa6539a6a98a (diff) | |
Merge tag 'v3.4-rc5' into next
Linux 3.4-rc5
Merge to pull in prerequisite change for Smack:
86812bb0de1a3758dc6c7aa01a763158a7c0638a
Requested by Casey.
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 9d7fc9a39933..140d3e11f212 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1978,6 +1978,18 @@ int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg) if (status == 0) { usb_set_device_state(rhdev, USB_STATE_SUSPENDED); hcd->state = HC_STATE_SUSPENDED; + + /* Did we race with a root-hub wakeup event? */ + if (rhdev->do_remote_wakeup) { + char buffer[6]; + + status = hcd->driver->hub_status_data(hcd, buffer); + if (status != 0) { + dev_dbg(&rhdev->dev, "suspend raced with wakeup event\n"); + hcd_bus_resume(rhdev, PMSG_AUTO_RESUME); + status = -EBUSY; + } + } } else { spin_lock_irq(&hcd_root_hub_lock); if (!HCD_DEAD(hcd)) { |