diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 5da546c4fd79..f07ab71859dd 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2594,16 +2594,14 @@ static int hub_set_address(struct usb_device *udev, int devnum) return 0; if (udev->state != USB_STATE_DEFAULT) return -EINVAL; - if (hcd->driver->address_device) { + if (hcd->driver->address_device) retval = hcd->driver->address_device(hcd, udev); - } else { + else retval = usb_control_msg(udev, usb_sndaddr0pipe(), USB_REQ_SET_ADDRESS, 0, devnum, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); - if (retval == 0) - update_address(udev, devnum); - } if (retval == 0) { + update_address(udev, devnum); /* Device now using proper address. */ usb_set_device_state(udev, USB_STATE_ADDRESS); usb_ep0_reinit(udev); @@ -3097,16 +3095,17 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, udev->speed = USB_SPEED_UNKNOWN; /* - * xHCI needs to issue an address device command later - * in the hub_port_init sequence for SS/HS/FS/LS devices. + * Set the address. + * Note xHCI needs to issue an address device command later + * in the hub_port_init sequence for SS/HS/FS/LS devices, + * and xHC will assign an address to the device. But use + * kernel assigned address here, to avoid any address conflict + * issue. */ - if (!(hcd->driver->flags & HCD_USB3)) { - /* set the address */ - choose_address(udev); - if (udev->devnum <= 0) { - status = -ENOTCONN; /* Don't retry */ - goto loop; - } + choose_address(udev); + if (udev->devnum <= 0) { + status = -ENOTCONN; /* Don't retry */ + goto loop; } /* reset (non-USB 3.0 devices) and get descriptor */ |
