diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 855bb0d6313..c3368f978c4 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2584,6 +2584,9 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, return -ENOTCONN; if ((portstatus & USB_PORT_STAT_ENABLE)) { + if (!udev) + return 0; + if (hub_is_wusb(hub)) udev->speed = USB_SPEED_WIRELESS; else if (hub_is_superspeed(hub->hdev)) @@ -2627,13 +2630,15 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, struct usb_hcd *hcd; /* TRSTRCY = 10 ms; plus some extra */ msleep(10 + 40); - update_devnum(udev, 0); - hcd = bus_to_hcd(udev->bus); - /* The xHC may think the device is already reset, - * so ignore the status. - */ - if (hcd->driver->reset_device) - hcd->driver->reset_device(hcd, udev); + if (udev) { + update_devnum(udev, 0); + hcd = bus_to_hcd(udev->bus); + /* The xHC may think the device is already + * reset, so ignore the status. + */ + if (hcd->driver->reset_device) + hcd->driver->reset_device(hcd, udev); + } } /* FALL THROUGH */ case -ENOTCONN: @@ -2647,7 +2652,7 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_PORT_LINK_STATE); } - if (!warm) + if (!warm && udev) usb_set_device_state(udev, *status ? USB_STATE_NOTATTACHED : USB_STATE_DEFAULT); |