On 5/5/2018 12:30 PM, Artur Petrosyan wrote:
> Crash caused by going out of "eps_out" array range.
> Iteration on "eps_out" changed to less than "num_of_eps".
>
> Signed-off-by: Artur Petrosyan <art...@synopsys.com>
> ---
Acked-by: Minas Harutyunyan <hmi...@synopsys.com>
> drivers/usb/dwc2/gadget.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
> index 6c32bf26e48e..010cfbca962a 100644
> --- a/drivers/usb/dwc2/gadget.c
> +++ b/drivers/usb/dwc2/gadget.c
> @@ -3427,7 +3427,7 @@ static void
> dwc2_gadget_handle_incomplete_isoc_in(struct dwc2_hsotg *hsotg)
>
> daintmsk = dwc2_readl(hsotg->regs + DAINTMSK);
>
> - for (idx = 1; idx <= hsotg->num_of_eps; idx++) {
> + for (idx = 1; idx < hsotg->num_of_eps; idx++) {
> hs_ep = hsotg->eps_in[idx];
> /* Proceed only unmasked ISOC EPs */
> if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk))
> @@ -3473,7 +3473,7 @@ static void
> dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg)
> daintmsk = dwc2_readl(hsotg->regs + DAINTMSK);
> daintmsk >>= DAINT_OUTEP_SHIFT;
>
> - for (idx = 1; idx <= hsotg->num_of_eps; idx++) {
> + for (idx = 1; idx < hsotg->num_of_eps; idx++) {
> hs_ep = hsotg->eps_out[idx];
> /* Proceed only unmasked ISOC EPs */
> if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk))
> @@ -3647,7 +3647,7 @@ static irqreturn_t dwc2_hsotg_irq(int irq, void *pw)
> dwc2_writel(gintmsk, hsotg->regs + GINTMSK);
>
> dev_dbg(hsotg->dev, "GOUTNakEff triggered\n");
> - for (idx = 1; idx <= hsotg->num_of_eps; idx++) {
> + for (idx = 1; idx < hsotg->num_of_eps; idx++) {
> hs_ep = hsotg->eps_out[idx];
> /* Proceed only unmasked ISOC EPs */
> if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk))
>
--
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