Re: [PATCH] iio: temperature: mlx90635: Fix ERR_PTR dereference in mlx90635_probe()

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On Mon, 13 May 2024 at 22:24, Harshit Mogalapalli
<harshit.m.mogalapalli@xxxxxxxxxx> wrote:
>
> Hi Crt,
>
> On 14/05/24 01:32, Crt Mori wrote:
> > Hi,
> > I agree it is is copy-paste error. Minor remark below and a few typo
> > fixes in commit message. Thanks for your contribution.
> >
> > Reviewed-by: Crt Mori<cmo@xxxxxxxxxxx>
> >
>
> Thanks for the review.
>
>
> > On Mon, 13 May 2024 at 20:47, Harshit Mogalapalli
> > <harshit.m.mogalapalli@xxxxxxxxxx> wrote:
> >>
> >> When devm_regmap_init_i2c() fails, ragmap_ee could be error pointer,
> > When devm_regmap_init_i2c() fails, regmap_ee could be error pointer,
> >
>
> Oops, sorry for the typo, I will fix it in V2.
>
> >> instead of checking for IS_ERR(ragmap_ee), regmap is checked which looks
> > instead of checking for IS_ERR(regmap_ee), regmap is checked which looks

There is another typo here in case you missed it.

> >> like a copy paste error.
> >>
> >> Fixes: a1d1ba5e1c28 ("iio: temperature: mlx90635 MLX90635 IR Temperature sensor")
> >> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@xxxxxxxxxx>
> >> ---
> >> This is found using smatch, only compile tested.
> >> ---
> >>   drivers/iio/temperature/mlx90635.c | 4 ++--
> >>   1 file changed, 2 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/iio/temperature/mlx90635.c b/drivers/iio/temperature/mlx90635.c
> >> index 1f5c962c1818..2b61489d5ee0 100644
> >> --- a/drivers/iio/temperature/mlx90635.c
> >> +++ b/drivers/iio/temperature/mlx90635.c
> >> @@ -947,8 +947,8 @@ static int mlx90635_probe(struct i2c_client *client)
> >>                                       "failed to allocate regmap\n");
> >>
> >>          regmap_ee = devm_regmap_init_i2c(client, &mlx90635_regmap_ee);
> >> -       if (IS_ERR(regmap))
> >> -               return dev_err_probe(&client->dev, PTR_ERR(regmap),
> >> +       if (IS_ERR(regmap_ee))
> >> +               return dev_err_probe(&client->dev, PTR_ERR(regmap_ee),
> >>                                       "failed to allocate regmap\n");
> >
> > Maybe fix her would also be to this regmap error message to include
> > regmap EEPROM?
> >
> Should we make it like:
>
> "failed to allocate EEPROM regmap\n" ?
>

Sure, we can change it to that. Descriptive enough.

> Thanks,
> Harshit
>
>
> >>
> >>          mlx90635 = iio_priv(indio_dev);
> >> --
> >> 2.39.3
> >>
>




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