From: Felipe Balbi <balbi@ti.com>
Date: Mon, 25 Jun 2012 16:30:49 +0000 (+0300)
Subject: usb: dwc3: ep0: prevent starting transfers twice on ep0
X-Git-Tag: v3.6-rc1~101^2~53^2~27^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c81ababecd7ddae08ca944a65d8030cd393013c;p=pandora-kernel.git

usb: dwc3: ep0: prevent starting transfers twice on ep0

In case we try to start an invalid test mode, we
will call dwc3_ep0_stall_and_restart() but we will
also call dwc3_ep0_out_start() which will start
a second transfer on ep0.

Let's prevent any problems by returning early in
the error case.

Signed-off-by: Felipe Balbi <balbi@ti.com>
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