linux-kernel - Re: [PATCH] ASoC: fix odd_ptr

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Date:   Sat, 22 Apr 2017 08:54:11 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Julia Lawall <julia.lawall@...6.fr>
Cc:     Simon Ho <simon.ho@...exant.com>, alsa-devel@...a-project.org,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
        kbuild-all@...org
Subject: Re: [PATCH] ASoC: fix odd_ptr_err.cocci warnings (fwd)

On Sat, 22 Apr 2017 00:14:57 +0200,
Julia Lawall wrote:
> 
> I don't think the patch is correct, so I haven't bothered signing off on
> it.  Probably the & is not correct in the IS_ERR call?

Yes, IS_ERR() was called with the wrong argument.  I fixed it now.

Note that it's no branch to be merged to upstream yet, it's just a
testing for the previously submitted patchset.

Simon, my latest version is found in topic/soc-cx2072x branch in sound
git tree:
  git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git

Please check that before the next submission.


thanks,

Takashi

> 
> julia
> 
> ---------- Forwarded message ----------
> Date: Sat, 22 Apr 2017 06:09:26 +0800
> From: kbuild test robot <fengguang.wu@...el.com>
> To: kbuild@...org
> Cc: Julia Lawall <julia.lawall@...6.fr>
> Subject: [PATCH] ASoC: fix odd_ptr_err.cocci warnings
> 
>  PTR_ERR should access the value just tested by IS_ERR
> 
> Semantic patch information:
>  There can be false positives in the patch case, where it is the call to
>  IS_ERR that is wrong.
> 
> Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci
> 
> CC: Simon Ho <simon.ho@...exant.com>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
> ---
> 
> Please take the patch only if it's a positive warning. Thanks!
> 
>  cx2072x.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/sound/soc/codecs/cx2072x.c
> +++ b/sound/soc/codecs/cx2072x.c
> @@ -2183,7 +2183,7 @@ static int cx2072x_i2c_probe(struct i2c_
>  		&cx2072x_regmap);
> 
>  	if (IS_ERR(&cx2072x->regmap)) {
> -		ret = PTR_ERR(cx2072x->regmap);
> +		ret = PTR_ERR(&cx2072x->regmap);
>  		dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
>  		return ret;
>  	}
>