[PATCH 2/4] usbgadget: do not register when no functions present

[Oleksij Rempel]

On Wed, Sep 27, 2017 at 11:12:43AM +0200, Sascha Hauer wrote:
> registering a multifunction device makes only sense when there's
> at least one function configured. Just return otherwise.
> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> ---
>  drivers/usb/gadget/autostart.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/usb/gadget/autostart.c b/drivers/usb/gadget/autostart.c
> index 3fa43137fa..a27be899c3 100644
> --- a/drivers/usb/gadget/autostart.c
> +++ b/drivers/usb/gadget/autostart.c
> @@ -55,6 +55,10 @@ static int usbgadget_autostart(void)
>  
>  	opts->create_acm = acm;
>  
> +	if (!opts->fastboot_opts.files && !opts->create_acm) {
> +		pr_warn("No functions to register\n");
> +		return 0;
> +	}
>  
>  	ret = usb_multi_register(opts);
>  	if (ret)
> -- 
> 2.11.0
> 
> 

Reviewed-by: Oleksij Rempel <o.rempel at pengutronix.de>

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