From 84181086342615a8c6cb28901fd8d67939b3c903 Mon Sep 17 00:00:00 2001 From: Paul Zimmerman Date: Mon, 23 Sep 2013 14:23:33 -0700 Subject: [PATCH] staging: dwc2: validate urb->actual_length for OUT endpoints In dwc2_assign_and_init_hc(), validate urb->actual_length for OUT endpoints before using the value. This fix is from the Synopsys vendor driver. Signed-off-by: Paul Zimmerman Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dwc2/hcd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/staging/dwc2/hcd.c b/drivers/staging/dwc2/hcd.c index da0d35c..b245405 100644 --- a/drivers/staging/dwc2/hcd.c +++ b/drivers/staging/dwc2/hcd.c @@ -780,6 +780,10 @@ static void dwc2_assign_and_init_hc(struct dwc2_hsotg *hsotg, chan->data_pid_start = qh->data_toggle; chan->multi_count = 1; + if ((urb->actual_length < 0 || urb->actual_length > urb->length) && + !dwc2_hcd_is_pipe_in(&urb->pipe_info)) + urb->actual_length = urb->length; + if (hsotg->core_params->dma_enable > 0) { chan->xfer_dma = urb->dma + urb->actual_length; -- 2.7.4