USB: Prepare for refactoring by adding extra udev checks.

[pandora-kernel.git] / drivers / usb / core / hub.c

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index b8b90e7..9af60fa 100644 (file)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2194,6 +2194,9 @@ 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))
@@ -2237,13 +2240,15 @@ 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:
@@ -2257,7 +2262,7 @@ 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);