diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/hub.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index f1efabbc1ca2..107e1d25ddec 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1822,9 +1822,15 @@ static int check_port_resume_type(struct usb_device *udev, status = -ENODEV; } - /* Can't do a normal resume if the port isn't enabled */ - else if (!(portstatus & USB_PORT_STAT_ENABLE) && !udev->reset_resume) - status = -ENODEV; + /* Can't do a normal resume if the port isn't enabled, + * so try a reset-resume instead. + */ + else if (!(portstatus & USB_PORT_STAT_ENABLE) && !udev->reset_resume) { + if (udev->persist_enabled) + udev->reset_resume = 1; + else + status = -ENODEV; + } if (status) { dev_dbg(hub->intfdev, @@ -1973,6 +1979,7 @@ static int finish_port_resume(struct usb_device *udev) * resumed. */ if (udev->reset_resume) + retry_reset_resume: status = usb_reset_and_verify_device(udev); /* 10.5.4.5 says be sure devices in the tree are still there. @@ -1984,6 +1991,13 @@ static int finish_port_resume(struct usb_device *udev) status = usb_get_status(udev, USB_RECIP_DEVICE, 0, &devstatus); if (status >= 0) status = (status > 0 ? 0 : -ENODEV); + + /* If a normal resume failed, try doing a reset-resume */ + if (status && !udev->reset_resume && udev->persist_enabled) { + dev_dbg(&udev->dev, "retry with reset-resume\n"); + udev->reset_resume = 1; + goto retry_reset_resume; + } } if (status) { |