netdev - Re: [PATCH net-next 2/2] net: cdc_eem: clean up bind error path

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Date:   Wed, 07 Mar 2018 11:30:51 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     Johan Hovold <johan@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Cc:     linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] net: cdc_eem: clean up bind error path

Am Mittwoch, den 07.03.2018, 10:46 +0100 schrieb Johan Hovold:
> Drop bogus call to usb_driver_release_interface() from an error path in
> the usbnet bind() callback, which is called during interface probe. At
> this point the interface is not bound and usb_driver_release_interface()
> returns early.
> 
> Also remove the bogus call to clear the interface data, which is owned
> by the usbnet driver and would not even have been set by the time bind()
> is called.
> 
> Signed-off-by: Johan Hovold <johan@...nel.org>
Acked-by: Oliver Neukum <oneukum@...e.com>
> ---
>  drivers/net/usb/cdc_eem.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/net/usb/cdc_eem.c b/drivers/net/usb/cdc_eem.c
> index f7180f8db39e..61ea4eaace5d 100644
> --- a/drivers/net/usb/cdc_eem.c
> +++ b/drivers/net/usb/cdc_eem.c
> @@ -83,11 +83,8 @@ static int eem_bind(struct usbnet *dev, struct usb_interface *intf)
>  	int status = 0;
>  
>  	status = usbnet_get_endpoints(dev, intf);
> -	if (status < 0) {
> -		usb_set_intfdata(intf, NULL);
> -		usb_driver_release_interface(driver_of(intf), intf);
> +	if (status < 0)
>  		return status;
> -	}
>  
>  	/* no jumbogram (16K) support for now */
>