[v1] dfu: Reset timeout in case of DFU request

In case dfu command is being executed with timeout option,
the timer may expire in the middle of DFU operation. If there
is DFU request coming, we may simple reset timeout value
to prevent aborting of ongoing DFU operation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
---
 drivers/usb/gadget/f_dfu.c | 5 +++++
 1 file changed, 5 insertions(+)

Op 29-01-2020 om 16:23 schreef Andy Shevchenko:
> In case dfu command is being executed with timeout option,
> the timer may expire in the middle of DFU operation. If there
> is DFU request coming, we may simple reset timeout value
> to prevent aborting of ongoing DFU operation.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
> ---
>   drivers/usb/gadget/f_dfu.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/usb/gadget/f_dfu.c b/drivers/usb/gadget/f_dfu.c
> index 6756155133..a4a57ba5f5 100644
> --- a/drivers/usb/gadget/f_dfu.c
> +++ b/drivers/usb/gadget/f_dfu.c
> @@ -596,6 +596,11 @@ dfu_handle(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
>   	debug("req_type: 0x%x ctrl->bRequest: 0x%x f_dfu->dfu_state: 0x%x\n",
>   	       req_type, ctrl->bRequest, f_dfu->dfu_state);
>   
> +#ifdef CONFIG_DFU_TIMEOUT
> +	/* Forbid aborting by timeout. Next dfu command may update this */
> +	dfu_set_timeout(0);
> +#endif
> +
>   	if (req_type == USB_TYPE_STANDARD) {
>   		if (ctrl->bRequest == USB_REQ_GET_DESCRIPTOR &&
>   		    (w_value >> 8) == DFU_DT_FUNC) {
> 
Tested-by: Ferry Toth <ftoth at exalondelft.nl>