diff options
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hub.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index f76b2e0aba9d..1d1e61e980f3 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1112,6 +1112,16 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) USB_PORT_FEAT_ENABLE); } + /* + * Add debounce if USB3 link is in polling/link training state. + * Link will automatically transition to Enabled state after + * link training completes. + */ + if (hub_is_superspeed(hdev) && + ((portstatus & USB_PORT_STAT_LINK_STATE) == + USB_SS_PORT_LS_POLLING)) + need_debounce_delay = true; + /* Clear status-change flags; we'll debounce later */ if (portchange & USB_PORT_STAT_C_CONNECTION) { need_debounce_delay = true; |