Re: [PATCH -next] mfd: pm8008: Fix return value check in pm8008_probe()

[Yang Yingliang]

On 2021/6/4 3:05, Guru Das Srinagesh wrote:
> On Thu, Jun 03, 2021 at 08:31:28PM +0300, Dmitry Baryshkov wrote:
> > On Thu, 3 Jun 2021 at 20:18, Guru Das Srinagesh <gurus@xxxxxxxxxxxxxx> wrote:
> > > On Thu, Jun 03, 2021 at 10:13:57PM +0800, Yang Yingliang wrote:
> > > > In case of error, the function devm_regmap_init_i2c() returns ERR_PTR()
> > > > and never returns NULL. The NULL test in the return value check
> > > > should be replaced with IS_ERR().
> > > >
> > > > Fixes: 6b149f3310a4 ("mfd: pm8008: Add driver for QCOM PM8008 PMIC")
> > > > Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> > > > Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
> > > Acked-by: Guru Das Srinagesh <gurus@xxxxxxxxxxxxxx>
> > Interestingly, the change does not correspond to the changelog
> > message. And the code is correct as devm_kzalloc returns NULL if I
> > remember correctly.
My bad, I sent a wong patch, I will send a new one.

Thanks,
Yang
> Thanks for pointing that out - I missed that. I would like to retract my
> Acked-by for this patch.
>
> > > > ---
> > > >   drivers/mfd/qcom-pm8008.c | 2 +-
> > > >   1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/mfd/qcom-pm8008.c b/drivers/mfd/qcom-pm8008.c
> > > > index c472d7f8103c..dfefa60d693b 100644
> > > > --- a/drivers/mfd/qcom-pm8008.c
> > > > +++ b/drivers/mfd/qcom-pm8008.c
> > > > @@ -223,7 +223,7 @@ static int pm8008_probe(struct i2c_client *client)
> > > >        struct pm8008_data *chip;
> > > >
> > > >        chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
> > > > -     if (!chip)
> > > > +     if (IS_ERR(chip))
> > > >                return -ENOMEM;
> > > >
> > > >        chip->dev = &client->dev;
> > > > --
> > > > 2.25.1
> >
> >
> > --
> > With best wishes
> > Dmitry
> .