Re: [PATCH] iio: mma8452: mark expected switch fall-through

[Gustavo A. R. Silva]

On 2/20/19 11:21 AM, Gustavo A. R. Silva wrote:
> 
> 
> On 2/20/19 6:17 AM, Jonathan Cameron wrote:
>> On Mon, 11 Feb 2019 16:23:18 -0600
>> "Gustavo A. R. Silva" <gustavo@xxxxxxxxxxxxxx> wrote:
>>
>>> In preparation to enabling -Wimplicit-fallthrough, mark switch
>>> cases where we are expecting to fall through.
>>>
>>> This patch fixes the following warning:
>>>
>>> drivers/iio/accel/mma8452.c: In function âmma8452_probeâ:
>>> drivers/iio/accel/mma8452.c:1581:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>>>    if (ret == data->chip_info->chip_id)
>>>       ^
>>> drivers/iio/accel/mma8452.c:1584:2: note: here
>>>   default:
>>>   ^~~~~~~
>>>
>>> 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@xxxxxxxxxxxxxx>
>> I know Peter probably won't like this, as it doesn't
>> read a as well, with the else dropped, but I'm going to take
>> it as we have had a lot of bugs caught by this code and this
>> is generating a false positive.
>>
>> Applied to the togreg branch of iio.git and pushed out as testing
>> for the autobuilders to play with it.
>>
> 
> Thanks, Jonathan.
> 

BTW, Jonathan, I wonder if you can apply this one too:

https://lore.kernel.org/patchwork/patch/996804/

Thanks
--
Gustavo