diff options
Diffstat (limited to 'drivers/usb/core/driver.c')
| -rw-r--r-- | drivers/usb/core/driver.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index ca43a6f824ab..ba5bbc7eedcc 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1102,9 +1102,16 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) if (udev->auto_pm) autosuspend_check(udev); - /* If the suspend succeeded, propagate it up the tree */ + /* If the suspend succeeded then prevent any more URB submissions, + * flush any outstanding URBs, and propagate the suspend up the tree. + */ } else { cancel_delayed_work(&udev->autosuspend); + udev->can_submit = 0; + for (i = 0; i < 16; ++i) { + usb_hcd_flush_endpoint(udev, udev->ep_out[i]); + usb_hcd_flush_endpoint(udev, udev->ep_in[i]); + } if (parent) usb_autosuspend_device(parent); } @@ -1154,6 +1161,7 @@ static int usb_resume_both(struct usb_device *udev) status = -ENODEV; goto done; } + udev->can_submit = 1; /* Propagate the resume up the tree, if necessary */ if (udev->state == USB_STATE_SUSPENDED) { |