linux-kernel - Re: [PATCH] iio: dac: mcp4725: fix odd_ptr

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Message-ID: <10011ef1-273a-80f9-b559-683ac6f68ac6@kernel.org>
Date:   Sun, 23 Oct 2016 10:09:14 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Julia Lawall <julia.lawall@...6.fr>,
        Tomas Novotny <tomas@...otny.cz>
Cc:     Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Yong Li <sdliyong@...il.com>,
        Akinobu Mita <akinobu.mita@...il.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        kbuild-all@...org
Subject: Re: [PATCH] iio: dac: mcp4725: fix odd_ptr_err.cocci warnings

On 22/10/16 21:41, Julia Lawall wrote:
> PTR_ERR should access the value just tested by IS_ERR
> 
> Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci
> 
> CC: Tomas Novotny <tomas@...otny.cz>
> Signed-off-by: Julia Lawall <julia.lawall@...6.fr>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
Looks fairly obvious to me and I want to get a pull request out
shortly so applied.

Thanks,

Jonathan
> ---
> 
> Please take the patch only if it's a positive warning. Thanks!
> 
> Not checked at all.  This is being reported on the following tree:
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
> testing
> head:   2796a310d462f73954c0ce8ffabaf4baacaecca1
> commit: e0b80def1faa901d83a7d580e8aa4ad4a512bedf [109/113] iio: dac:
> mcp4725: support voltage reference selection
> :::::: branch date: 2 hours ago
> :::::: commit date: 2 hours ago
> 
> 
>  mcp4725.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/drivers/iio/dac/mcp4725.c
> +++ b/drivers/iio/dac/mcp4725.c
> @@ -418,7 +418,7 @@ static int mcp4725_probe(struct i2c_clie
>  	if (pdata->use_vref) {
>  		data->vref_reg = devm_regulator_get(&client->dev, "vref");
>  		if (IS_ERR(data->vref_reg)) {
> -			err = PTR_ERR(data->vdd_reg);
> +			err = PTR_ERR(data->vref_reg);
>  			goto err_disable_vdd_reg;
>  		}
>