On 20-01-23, 08:56, Geert Uytterhoeven wrote:
> Hi Rob,
>
> On Wed, Jan 18, 2023 at 8:49 PM Rob Herring <robh@xxxxxxxxxx> wrote:
> > On Wed, Jan 18, 2023 at 12:28 PM Geert Uytterhoeven
> > <geert@xxxxxxxxxxxxxx> wrote:
> > > On Wed, Jan 18, 2023 at 6:30 PM Rob Herring <robh@xxxxxxxxxx> wrote:
> > > > On Wed, Jan 18, 2023 at 4:15 AM Geert Uytterhoeven
> > > > <geert+renesas@xxxxxxxxx> wrote:
> > > > > Use the new devm_of_phy_optional_get() helper instead of open-coding the
> > > > > same operation.
> > > > >
> > > > > This lets us drop several checks for IS_ERR(), as phy_power_{on,off}()
> > > > > handle NULL parameters fine.
> > > > >
> > > > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> > > > > ---
> > > > > drivers/usb/host/ohci-exynos.c | 24 +++++++-----------------
> > > > > 1 file changed, 7 insertions(+), 17 deletions(-)
> > > > >
> > > > > diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
> > > > > index 8d7977fd5d3bd502..8dd9c3b2411c383f 100644
> > > > > --- a/drivers/usb/host/ohci-exynos.c
> > > > > +++ b/drivers/usb/host/ohci-exynos.c
> > > > > @@ -69,19 +69,12 @@ static int exynos_ohci_get_phy(struct device *dev,
> > > > > return -EINVAL;
> > > > > }
> > > > >
> > > > > - phy = devm_of_phy_get(dev, child, NULL);
> > > > > + phy = devm_of_phy_optional_get(dev, child, NULL);
> > > > > exynos_ohci->phy[phy_number] = phy;
> > > > > if (IS_ERR(phy)) {
> > > > > - ret = PTR_ERR(phy);
> > > > > - if (ret == -EPROBE_DEFER) {
> > > > > - of_node_put(child);
> > > > > - return ret;
> > > > > - } else if (ret != -ENOSYS && ret != -ENODEV) {
> > > > > - dev_err(dev,
> > > > > - "Error retrieving usb2 phy: %d\n", ret);
> > > > > - of_node_put(child);
> > > > > - return ret;
> > > > > - }
> > > > > + of_node_put(child);
> > > > > + return dev_err_probe(dev, PTR_ERR(phy),
> > > > > + "Error retrieving usb2 phy\n");
> > > >
> > > > Optional is really the only reason for the caller to decide whether to
> > > > print an error message or not. If we have both flavors of 'get', then
> > > > really the 'get' functions should print an error message.
> > >
> > > In case of a real error, both should print an error message, right?
> > >
> > > Anyway, I understand that's a three step operation:
> > > 1. Introduce and convert to the _optional variant,
> > > 2. Add error printing to callees.
> > > 3. Remove error printing from callers.
> >
> > I think you only need 2 out of 3 steps depending on the situation. In
> > this case, you can add error printing in the _optional variant when
> > you introduce it and then convert callers to it.
> >
> > Where we already have an optional variant, then you need steps 2 and 3.
>
> Right, so the error printing can be done now, while introducing
> devm_of_phy_optional_get().
>
> Vinod: Do you agree?
Ack.. IMO makes it better that way
> If yes, I can respin with that change.
ok
> If not, I'll have to respin anyway, as the bug in
> am65_cpsw_init_serdes_phy() has been fixed in the meantime.
>
> Thanks!
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
>
> --
> linux-phy mailing list
> linux-phy@xxxxxxxxxxxxxxxxxxx
> https://lists.infradead.org/mailman/listinfo/linux-phy
--
~Vinod
