[alsa-devel] [PATCH 2/2] ASoC: pcm1681: Improve the logic for de-emphasis sampling rate selection

[Marek Belisko]

On 07/24/2015 03:17 AM, Axel Lin wrote:
> 2015-07-24 3:48 GMT+08:00 Marek Belisko <marek.belisko at streamunlimited.com>:
>> Hi Axel,
>>
>> On 23.07.2015 17:23, Axel Lin wrote:
>>>
>>> Slightly improve the logic for de-emphasis sampling rate selection by
>>> break
>>> out the loop if the rate is matched.
>>>
>>> Signed-off-by: Axel Lin <axel.lin at ingics.com>
>>> ---
>>>   sound/soc/codecs/pcm1681.c | 13 +++++++++----
>>>   1 file changed, 9 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/sound/soc/codecs/pcm1681.c b/sound/soc/codecs/pcm1681.c
>>> index 1011142..5832523 100644
>>> --- a/sound/soc/codecs/pcm1681.c
>>> +++ b/sound/soc/codecs/pcm1681.c
>>> @@ -95,17 +95,22 @@ static int pcm1681_set_deemph(struct snd_soc_codec
>>> *codec)
>>>         struct pcm1681_private *priv = snd_soc_codec_get_drvdata(codec);
>>>         int i = 0, val = -1, enable = 0;
>>>
>>> -       if (priv->deemph)
>>> -               for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++)
>>> -                       if (pcm1681_deemph[i] == priv->rate)
>>> +       if (priv->deemph) {
>>> +               for (i = 0; i < ARRAY_SIZE(pcm1681_deemph); i++) {
>>> +                       if (pcm1681_deemph[i] == priv->rate) {
>>>                                 val = i;
>>> +                               break;
>>> +                       }
>>> +               }
>>> +       }
>>
>> ^^^^^^^
>> I think we don't need those brackets only for if statement (where you add
>> break)
> 
> Because I think having the brackets here makes the code looks better.
If we follow CodingStyle then it says no brackets around single statement.
> 
>>>
>>>
>>>         if (val != -1) {
>>>                 regmap_update_bits(priv->regmap, PCM1681_DEEMPH_CONTROL,
>>>                                    PCM1681_DEEMPH_RATE_MASK, val << 3);
>>>                 enable = 1;
>>> -       } else
>>> +       } else {
>>>                 enable = 0;
>>> +       }
>>
>> ^^^ same here
> 
> This is also a common pattern in kernel coding style that if we have
> brackets around the if statement, also add the brackets for the else
> part.
OK agree. Sorry about that. I have to read again CodingStyle ;)
> 
> Regards,
> Axel
> 

BR,

marek