netdev - Re: [PATCH] CDC-NCM: remove "connected" log message

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Date:   Thu, 24 Dec 2020 08:53:52 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Roland Dreier <roland@...nel.org>
Cc:     Oliver Neukum <oliver@...kum.org>, netdev@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH] CDC-NCM: remove "connected" log message

On Wed, Dec 23, 2020 at 07:21:16PM -0800, Roland Dreier wrote:
> The cdc_ncm driver passes network connection notifications up to
> usbnet_link_change(), which is the right place for any logging.
> Remove the netdev_info() duplicating this from the driver itself.
> 
> This stops devices such as my "TRENDnet USB 10/100/1G/2.5G LAN"
> (ID 20f4:e02b) adapter from spamming the kernel log with
> 
>     cdc_ncm 2-2:2.0 enp0s2u2c2: network connection: connected
> 
> messages every 60 msec or so.
> 
> Signed-off-by: Roland Dreier <roland@...nel.org>
> ---
>  drivers/net/usb/cdc_ncm.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
> index a45fcc44facf..50d3a4e6d445 100644
> --- a/drivers/net/usb/cdc_ncm.c
> +++ b/drivers/net/usb/cdc_ncm.c
> @@ -1850,9 +1850,6 @@ static void cdc_ncm_status(struct usbnet *dev, struct urb *urb)
>  		 * USB_CDC_NOTIFY_NETWORK_CONNECTION notification shall be
>  		 * sent by device after USB_CDC_NOTIFY_SPEED_CHANGE.
>  		 */
> -		netif_info(dev, link, dev->net,
> -			   "network connection: %sconnected\n",
> -			   !!event->wValue ? "" : "dis");
>  		usbnet_link_change(dev, !!event->wValue, 0);
>  		break;
>  
> -- 
> 2.29.2
> 

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>