linux-kernel - Re: [PATCH] usb: gadget: atmel_usba_udc: Mark expected switch fall-through

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Message-ID: <20190812145853.GP3600@piout.net>
Date:   Mon, 12 Aug 2019 16:58:53 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Cristian Birsan <cristian.birsan@...rochip.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: gadget: atmel_usba_udc: Mark expected switch
 fall-through

On 05/08/2019 13:48:42-0500, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
> 
> This patch fixes the following warning (Building: at91_dt_defconfig arm):
> 
> drivers/usb/gadget/udc/atmel_usba_udc.c:329:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
Acked-by: Alexandre Belloni <alexandre.belloni@...tlin.com>

> ---
>  drivers/usb/gadget/udc/atmel_usba_udc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
> index 503d275bc4c4..86ffc8307864 100644
> --- a/drivers/usb/gadget/udc/atmel_usba_udc.c
> +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
> @@ -327,6 +327,7 @@ static int usba_config_fifo_table(struct usba_udc *udc)
>  	switch (fifo_mode) {
>  	default:
>  		fifo_mode = 0;
> +		/* fall through */
>  	case 0:
>  		udc->fifo_cfg = NULL;
>  		n = 0;
> -- 
> 2.22.0
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com