linux-kernel - Re: [PATCH] nvram: annotate implicit fall through

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Message-ID: <59962ef4-d349-e5ac-3dab-e1c70409f8ff@embeddedor.com>
Date:   Mon, 14 Jan 2019 15:40:36 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Mathieu Malaterre <malat@...ian.org>, Arnd Bergmann <arnd@...db.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nvram: annotate implicit fall through



On 1/14/19 2:44 PM, Mathieu Malaterre wrote:
> There is a plan to build the kernel with -Wimplicit-fallthrough and
> this place in the code produced a warning (W=1).
> 
> This commit remove the following warning:
> 
>    drivers/char/generic_nvram.c:83:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
> 
> Signed-off-by: Mathieu Malaterre <malat@...ian.org>
> ---
>   drivers/char/generic_nvram.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
> index ff5394f47587..53123c110f7b 100644
> --- a/drivers/char/generic_nvram.c
> +++ b/drivers/char/generic_nvram.c
> @@ -81,6 +81,7 @@ static int nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
>   #ifdef CONFIG_PPC_PMAC
>   	case OBSOLETE_PMAC_NVRAM_GET_OFFSET:
>   		printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n");

Here you could use the pr_warn() macro instead of the obsolete printk KERN_WARNING, but that'd
be another patch.

Anyway:

Acked-by: Gustavo A. R. Silva <gustavo@...eddedor.com>

Thanks
--
Gustavo

> +		/* fall through */
>   	case IOC_NVRAM_GET_OFFSET: {
>   		int part, offset;
>   
>