netdev - Re: [PATCH 2/2] bpf: annotate implicit fall through

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Message-ID: <79030d7e-4db4-c03a-b2e0-53f1b30e0924@iogearbox.net>
Date:   Tue, 15 Jan 2019 21:01:07 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Mathieu Malaterre <malat@...ian.org>,
        Alexei Starovoitov <ast@...nel.org>
Cc:     "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] bpf: annotate implicit fall through

On 01/15/2019 10:03 AM, Sergei Shtylyov wrote:
> On 14.01.2019 23:29, Mathieu Malaterre wrote:
> 
>> There is a plan to build the kernel with -Wimplicit-fallthrough and
>> thise place in the code produced a warnings (W=1).
> 
>    This?
> 
>> In this particular case change a ‘:’ with a ‘,’ so as to match the
>> regular expression expected by GCC.
>>
>> This commit remove the following warning:
>>
>>    net/core/filter.c:5310:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>>
>> Signed-off-by: Mathieu Malaterre <malat@...ian.org>

Please respin and also make the two subject lines not exactly the same.

Thanks,
Daniel

>> ---
>>   net/core/filter.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/net/core/filter.c b/net/core/filter.c
>> index 447dd1bad31f..c8069a142994 100644
>> --- a/net/core/filter.c
>> +++ b/net/core/filter.c
>> @@ -5309,7 +5309,7 @@ bpf_base_func_proto(enum bpf_func_id func_id)
>>       case BPF_FUNC_trace_printk:
>>           if (capable(CAP_SYS_ADMIN))
>>               return bpf_get_trace_printk_proto();
>> -        /* else: fall through */
>> +        /* else, fall through */
> 
>    The other patches seem to just drop "else:"...
> 
>>       default:
>>           return NULL;
>>       }
>>
> 
> MBR, Sergei