linux-kernel - Re: [PATCH -next] ASoC: sun4i-i2s: Use PTR_ERR_OR_ZERO in sun4i_i2s_init_regmap

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Date:   Thu, 22 Aug 2019 15:41:43 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Yuehaibing <yuehaibing@...wei.com>
Cc:     Maxime Ripard <mripard@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, Chen-Yu Tsai <wens@...e.org>,
        Marcus Cooper <codekipper@...il.com>,
        Vasily Khoruzhick <anarsoul@...il.com>,
        alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH -next] ASoC: sun4i-i2s: Use PTR_ERR_OR_ZERO in
 sun4i_i2s_init_regmap_fields()

On Thu, Aug 22, 2019 at 10:34:37PM +0800, Yuehaibing wrote:
> On 2019/8/22 22:18, Maxime Ripard wrote:
> > On Thu, Aug 22, 2019 at 06:52:52AM +0000, YueHaibing wrote:

> >> -	if (IS_ERR(i2s->field_fmt_sr))
> >> -		return PTR_ERR(i2s->field_fmt_sr);
> >> -
> >> -	return 0;
> >> +	return PTR_ERR_OR_ZERO(i2s->field_fmt_sr);

> > I'm not really convinced that this more readable or more maintainable
> > though. Is there a reason for this other than we can do it?

> No special reason, just suggested by scripts/coccinelle/api/ptr_ret.cocci

Which is a bit of a reason in itself since it'll save other people
looking at the same thing though with a return like this I have to agree
with Maxime a bit and question if the coccinelle script is really a good
idea.

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