linux-kernel - Re: [PATCH v2 17/25] usb: gadget: f

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Date:   Fri, 26 Aug 2022 09:48:01 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dmitry Bogdanov <d.bogdanov@...ro.com>,
        linux-scsi@...r.kernel.org, target-devel@...r.kernel.org
Subject: Re: [PATCH v2 17/25] usb: gadget: f_tcm: Handle abort command

On 2022-07-18 18:27:51 [-0700], Thinh Nguyen wrote:
> diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
> --- a/drivers/usb/gadget/function/f_tcm.c
> +++ b/drivers/usb/gadget/function/f_tcm.c
> @@ -1278,6 +1278,22 @@ static void usbg_queue_tm_rsp(struct se_cmd *se_cmd)
>  
>  static void usbg_aborted_task(struct se_cmd *se_cmd)
>  {
> +	struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, se_cmd);
> +	struct f_uas *fu = cmd->fu;
> +	struct uas_stream *stream = cmd->stream;
> +	int ret = 0;
> +
> +	if (stream->req_out->status == -EINPROGRESS)
> +		ret = usb_ep_dequeue(fu->ep_out, stream->req_out);
> +	else if (stream->req_in->status == -EINPROGRESS)
> +		ret = usb_ep_dequeue(fu->ep_in, stream->req_in);
> +	else if (stream->req_status->status == -EINPROGRESS)
> +		ret = usb_ep_dequeue(fu->ep_status, stream->req_status);
> +
> +	if (ret)
> +		pr_err("Unable to dequeue se_cmd out %p\n", se_cmd);

I know I wasn't the best example here. But if you continue to work on
that one, if would be nice if you could replace all the pr_err() here
with a dev_err() (or so) so it is bound to an actual device and the
reader can actually pin point the message to the actually device/
subsystem. I'm not sure if we lack a device or I was extremely lazy.
Again, not something you need change now.

> +	cmd->state = UASP_QUEUE_COMMAND;
>  }
>  
>  static const char *usbg_check_wwn(const char *name)

Sebastian