diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-05-14 14:43:40 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-05-14 14:43:40 +0200 |
| commit | 9cba26e66d09bf394ae5a739627a1dc8b7cae6f4 (patch) | |
| tree | f03743d576a0c7826b9921ad47e70370ebe80a22 /drivers/usb/core/hcd.c | |
| parent | ec83db0f78cd44c3b586ec1c3a348d1a8a389797 (diff) | |
| parent | 73eff9f56e15598c8399c0b86899fd889b97f085 (diff) | |
Merge branch 'perf/uprobes' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/uprobes
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 9d7fc9a3993..140d3e11f21 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)) { |