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 <paulz@xxxxxxxxxxxx>
---
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;
--
1.8.2.rc0.16.g20a599e
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