diff options
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hub.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 71bf1c7635de..143454ea385b 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2681,8 +2681,15 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, if (ret < 0) return ret; - /* The port state is unknown until the reset completes. */ - if (!(portstatus & USB_PORT_STAT_RESET)) + /* + * The port state is unknown until the reset completes. + * + * On top of that, some chips may require additional time + * to re-establish a connection after the reset is complete, + * so also wait for the connection to be re-established. + */ + if (!(portstatus & USB_PORT_STAT_RESET) && + (portstatus & USB_PORT_STAT_CONNECTION)) break; /* switch to the long delay after two short delay failures */ |