From: Felipe Balbi Date: Mon, 25 Jun 2012 16:30:49 +0000 (+0300) Subject: usb: dwc3: ep0: prevent starting transfers twice on ep0 X-Git-Tag: firefly_0821_release~3680^2~2357^2~24^2~34^2~5 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5c81ababecd7ddae08ca944a65d8030cd393013c;p=firefly-linux-kernel-4.4.55.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 --- diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 9a8f26cef0a1..8244eb53082e 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -744,6 +744,7 @@ static void dwc3_ep0_complete_status(struct dwc3 *dwc, dev_dbg(dwc->dev, "Invalid Test #%d\n", dwc->test_mode_nr); dwc3_ep0_stall_and_restart(dwc); + return; } }