linux-kernel - Re: [PATCH 31/33] ASoC: max98088: use match

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Date:   Tue, 22 May 2018 20:30:16 +0800
From:   Yisheng Xie <xieyisheng1@...wei.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        "ALSA Development Mailing List" <alsa-devel@...a-project.org>
Subject: Re: [PATCH 31/33] ASoC: max98088: use match_string() helper

Hi Andy,

On 2018/5/22 6:24, Andy Shevchenko wrote:
> On Mon, May 21, 2018 at 2:58 PM, Yisheng Xie <xieyisheng1@...wei.com> wrote:
>> match_string() returns the index of an array for a matching string,
>> which can be used intead of open coded variant.
> 
>>  static int max98088_get_channel(struct snd_soc_component *component, const char *name)
>>  {
> 
>> +       int ret = match_string(eq_mode_name, ARRAY_SIZE(eq_mode_name), name);
> I would rather split this and move an assignment to the line before 'if'

hmm, you mean something like:

	int ret;

	ret = match_string(eq_mode_name, ARRAY_SIZE(eq_mode_name), name);
	if (ret < 0) /* Shouldn't happen */
		dev_err(component->dev, "Bad EQ channel name '%s'\n", name);
	return ret;
>>
>>         /* Shouldn't happen */
> 
>> +       if (ret < 0)
>> +               dev_err(component->dev, "Bad EQ channel name '%s'\n", name);
> 
>>         return -EINVAL;
> 
> return ret;
Right, sorry for this big mistake.

Thanks
Yisheng
> 
> ?
> 
>>  }
>>
>> --
>> 1.7.12.4
>>
> 
> 
>