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usb gadget: fix fsl_usb2_udc potential OOPS

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For fsl_usb2_udc driver, ep0 also has a descriptor.  Current code is
misleading and contains a logical mistake.  Here is the patch to fix it.

 http://bugzilla.kernel.org/show_bug.cgi?id=9595

Cc: stable <stable@kernel.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Li Yang 2008-01-03 10:04:40 -08:00 committed by Greg Kroah-Hartman
parent 3004e5379a
commit 2336a98679
1 changed files with 1 additions and 1 deletions
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drivers/usb/gadget/fsl_usb2_udc.c
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@ -776,7 +776,7 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
VDBG("%s, bad params\n", __FUNCTION__);
return -EINVAL;
}
if (!_ep || (!ep->desc && ep_index(ep))) {
if (unlikely(!_ep || !ep->desc)) {
VDBG("%s, bad ep\n", __FUNCTION__);
return -EINVAL;
}