On Fri, Apr 16, 2021 at 10:09 PM Bartosz Golaszewski
<bgolaszewski@xxxxxxxxxxxx> wrote:
>
> On Wed, Apr 14, 2021 at 7:29 PM Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx> wrote:
> >
> > cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") disables
> > regulator in runtime suspend. If runtime suspend is called before
> > regulator disable, it will results in regulator unbalanced disabling.
> >
> > Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
>
> Please add the Fixes tag.
>
Hi,
I resend the patch with the fix tag separately since other patches in
this series are not changed.
https://patchwork.ozlabs.org/project/linux-i2c/patch/20210420133050.377209-1-hsinyi@xxxxxxxxxxxx/
Thanks
> > ---
> > drivers/misc/eeprom/at24.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
> > index 926408b41270..7a6f01ace78a 100644
> > --- a/drivers/misc/eeprom/at24.c
> > +++ b/drivers/misc/eeprom/at24.c
> > @@ -763,7 +763,8 @@ static int at24_probe(struct i2c_client *client)
> > at24->nvmem = devm_nvmem_register(dev, &nvmem_config);
> > if (IS_ERR(at24->nvmem)) {
> > pm_runtime_disable(dev);
> > - regulator_disable(at24->vcc_reg);
> > + if (!pm_runtime_status_suspended(dev))
> > + regulator_disable(at24->vcc_reg);
> > return PTR_ERR(at24->nvmem);
> > }
> >
> > @@ -774,7 +775,8 @@ static int at24_probe(struct i2c_client *client)
> > err = at24_read(at24, 0, &test_byte, 1);
> > if (err) {
> > pm_runtime_disable(dev);
> > - regulator_disable(at24->vcc_reg);
> > + if (!pm_runtime_status_suspended(dev))
> > + regulator_disable(at24->vcc_reg);
> > return -ENODEV;
> > }
> >
> > --
> > 2.31.1.295.g9ea45b61b8-goog
> >
>
> Acked-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
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