Re: [PATCH v1 07/11] PCI: apple: switch to using fwnode_gpiod_get_index()

[Linus Walleij]

On Tue, Sep 6, 2022 at 2:19 AM Dmitry Torokhov
<dmitry.torokhov@xxxxxxxxx> wrote:

> On Sun, Sep 04, 2022 at 11:30:59PM -0700, Dmitry Torokhov wrote:
> > I would like to stop exporting OF-specific gpiod_get_from_of_node()
> > so that gpiolib can be cleaned a bit, so let's switch to the generic
> > fwnode property API.
> >
> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> >
> > diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c
> > index a2c3c207a04b..d83817d3ff86 100644
> > --- a/drivers/pci/controller/pcie-apple.c
> > +++ b/drivers/pci/controller/pcie-apple.c
> > @@ -516,8 +516,8 @@ static int apple_pcie_setup_port(struct apple_pcie *pcie,
> >       u32 stat, idx;
> >       int ret, i;
> >
> > -     reset = gpiod_get_from_of_node(np, "reset-gpios", 0,
> > -                                    GPIOD_OUT_LOW, "PERST#");
> > +     reset = fwnode_gpiod_get_index(of_fwnode_handle(np),
> > +                                    "reset", 0, GPIOD_OUT_LOW, "PERST#");
>
> Hmm, I am looking at the driver and it leaks the reset gpio on
> unbind/unload. I guess it does not matter in practice, but still nice
> not to leak. Thankfully it is easy to cure by switching to devm option:
> devm_fwnode_gpiod_get().
>
> I'll send and updated patch with a new justification.

With that change:
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij