usb: dwc3: ep0: prevent starting transfers twice on ep0
authorFelipe Balbi <balbi@ti.com>
Mon, 25 Jun 2012 16:30:49 +0000 (19:30 +0300)
committerFelipe Balbi <balbi@ti.com>
Mon, 25 Jun 2012 16:30:49 +0000 (19:30 +0300)
commit5c81ababecd7ddae08ca944a65d8030cd393013c
tree032008bb9f9d7efe374e695df18b81ea801d1cc2
parent9be2395186b3504aa5e337bd3284afb4966caae7
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>
drivers/usb/dwc3/ep0.c