linux-kernel - Re: [PATCH] net: ehea: Mark expected switch fall-through

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Date:   Mon, 29 Jul 2019 11:12:39 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     gustavo@...eddedor.com
Cc:     dougmill@...ux.ibm.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, sfr@...b.auug.org.au,
        keescook@...omium.org
Subject: Re: [PATCH] net: ehea: Mark expected switch fall-through

From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Date: Sun, 28 Jul 2019 19:30:09 -0500

> Mark switch cases where we are expecting to fall through.
> 
> This patch fixes the following warning:
> 
> drivers/net/ethernet/ibm/ehea/ehea_main.c: In function 'ehea_mem_notifier':
> include/linux/printk.h:311:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
>   printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
>   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/ibm/ehea/ehea_main.c:3253:3: note: in expansion of macro 'pr_info'
>    pr_info("memory offlining canceled");
>    ^~~~~~~
> drivers/net/ethernet/ibm/ehea/ehea_main.c:3256:2: note: here
>   case MEM_ONLINE:
>   ^~~~
> 
> Notice that, in this particular case, the code comment is
> modified in accordance with what GCC is expecting to find.
> 
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>

Applied.