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USB: gadgetfs behaves better on userspace init bug

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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>
This commit is contained in:
David Brownell 2007-01-16 23:06:07 -08:00 committed by Greg Kroah-Hartman
parent 5b89db02a5
commit ce46794f77
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/gadget/inode.c
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@ -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;