diff options
Diffstat (limited to 'drivers/usb/core/driver.c')
| -rw-r--r-- | drivers/usb/core/driver.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 8c081308b0e2..7c3710e421eb 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -279,9 +279,12 @@ static int usb_unbind_interface(struct device *dev) * altsetting means creating new endpoint device entries). * When either of these happens, defer the Set-Interface. */ - if (intf->cur_altsetting->desc.bAlternateSetting == 0) - ; /* Already in altsetting 0 so skip Set-Interface */ - else if (!error && intf->dev.power.status == DPM_ON) + if (intf->cur_altsetting->desc.bAlternateSetting == 0) { + /* Already in altsetting 0 so skip Set-Interface. + * Just re-enable it without affecting the endpoint toggles. + */ + usb_enable_interface(udev, intf, false); + } else if (!error && intf->dev.power.status == DPM_ON) usb_set_interface(udev, intf->altsetting[0]. desc.bInterfaceNumber, 0); else |