linux-kernel - Re: [PATCH] usb: dwc3: gadget: Remove dev_err() when queuing to inactive gadget/ep

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Date:   Fri, 15 Oct 2021 08:38:12 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Wesley Cheng <wcheng@...eaurora.org>
Cc:     balbi@...nel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, jackp@...eaurora.org
Subject: Re: [PATCH] usb: dwc3: gadget: Remove dev_err() when queuing to
 inactive gadget/ep

On Thu, Oct 14, 2021 at 04:35:34PM -0700, Wesley Cheng wrote:
> Since function drivers will still be active until dwc3_disconnect_gadget()
> is called, some applications will continue to queue packets to DWC3
> gadget.  This can lead to a flood of messages regarding failed ep queue,
> as the endpoint is in the process of being disabled.  Remove the print as
> function drivers will likely log queuing errors as well.
> 
> Signed-off-by: Wesley Cheng <wcheng@...eaurora.org>
> ---
>  drivers/usb/dwc3/gadget.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
> index 4845682a0408..674a9a527125 100644
> --- a/drivers/usb/dwc3/gadget.c
> +++ b/drivers/usb/dwc3/gadget.c
> @@ -1812,11 +1812,8 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
>  {
>  	struct dwc3		*dwc = dep->dwc;
>  
> -	if (!dep->endpoint.desc || !dwc->pullups_connected || !dwc->connected) {
> -		dev_err(dwc->dev, "%s: can't queue to disabled endpoint\n",
> -				dep->name);

Why not just change this to dev_dbg() instead?

thanks,

greg k-h