USB: gadgetfs behaves better on userspace init bug

Resolve an initizlization issue that could come up if the userspace
driver wrote invalid descriptors to a dual-speed device.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index e5ce4f0bb7cc..1c5e1ee7e36b 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1392,17 +1392,17 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
         spin_lock (&dev->lock);
         dev->setup_abort = 0;
         if (dev->state == STATE_DEV_UNCONNECTED) {
-
-                dev->state = STATE_DEV_CONNECTED;
-                dev->dev->bMaxPacketSize0 = gadget->ep0->maxpacket;
-
 #ifdef  CONFIG_USB_GADGET_DUALSPEED
                 if (gadget->speed == USB_SPEED_HIGH && dev->hs_config == 0) {
+                        spin_unlock(&dev->lock);
                         ERROR (dev, "no high speed config??\n");
                         return -EINVAL;
                 }
 #endif  /* CONFIG_USB_GADGET_DUALSPEED */
 
+                dev->state = STATE_DEV_CONNECTED;
+                dev->dev->bMaxPacketSize0 = gadget->ep0->maxpacket;
+
                 INFO (dev, "connected\n");
                 event = next_event (dev, GADGETFS_CONNECT);
                 event->u.speed = gadget->speed;