linux-kernel - Re: [PATCH net-next] xen-netfront: mark expected switch fall-through

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Date:   Tue, 16 Apr 2019 09:52:42 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Juergen Gross <jgross@...e.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Cc:     xen-devel@...ts.xenproject.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH net-next] xen-netfront: mark expected switch fall-through



On 4/16/19 2:17 AM, Juergen Gross wrote:
> On 15/04/2019 23:11, Gustavo A. R. Silva wrote:
>> In preparation to enabling -Wimplicit-fallthrough, mark switch
>> cases where we are expecting to fall through.
>>
>> This patch fixes the following warning:
>>
>> drivers/net/xen-netfront.c: In function ‘netback_changed’:
>> drivers/net/xen-netfront.c:2038:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>>    if (dev->state == XenbusStateClosed)
>>       ^
>> drivers/net/xen-netfront.c:2041:2: note: here
>>   case XenbusStateClosing:
>>   ^~~~
>>
>> Warning level 3 was used: -Wimplicit-fallthrough=3
>>
>> Notice that, in this particular case, the code comment is modified
>> in accordance with what GCC is expecting to find.
>>
>> This patch is part of the ongoing efforts to enable
>> -Wimplicit-fallthrough.
>>
>> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> 
> Reviewed-by: Juergen Gross <jgross@...e.com>
> 

Thanks, Juergen.
--
Gustavo