Re: [U-Boot] [PATCH] usb: gadget: ci_udc: implement usb_ep_ops dequeue callback

On 08/27/2015 05:08 AM, Marek Vasut wrote:

On Thursday, August 27, 2015 at 01:00:50 PM, Peng Fan wrote:

...

Implement endpoint dequeue callback function.

Without this function, uboot will hang when executing fastboot comamnd. See following flow: "fastboot_tx_write_str->fastboot_tx_write->usb_ep_dequeue->ep->ops->dequeue " without implement ci_udc dequeue function, ep->ops->dequeue is NULL, then uboot will hang.

Tested on mx6qsabresd board with fastboot enabled.

...

diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c

...

+static int ci_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)

...

• if (ci_req->req.status == -EINPROGRESS) {

• ci_req->req.status = -ECONNRESET;
  

• if (ci_req->req.complete)
  

• 	ci_req->req.complete(_ep, _req);
  

• }

Is there no need to reprogram the HW to abort the transfer?