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    SubjectRe: [PATCH v2 1/1] i2c: designware: set pinctrl recovery information from device pinctrl
    On Thu, Dec 15, 2022 at 10:15:35AM +0200, Hawa, Hanna wrote:
    > On 12/14/2022 6:09 PM, Andy Shevchenko wrote:

    ...

    > > > + if (dev->dev->pins && dev->dev->pins->p)
    > > > + rinfo->pinctrl = dev->dev->pins->p;
    > > Hmm... I don't see how this field is being used.
    > > Can you elaborate?
    >
    > This field is used in i2c_generic_scl_recovery(), if it's not NULL then the
    > flow will set the state to GPIO before running the recovery mechanism.
    > if (bri->pinctrl)
    > pinctrl_select_state(bri->pinctrl, bri->pins_gpio);

    OK, but why that function doesn't use the dev->pins->p if it's defined?
    (As a fallback when rinfo->pinctrl is NULL.)

    Wolfram?

    Hanna, it seems you missed I²C maintainer to Cc...

    ...

    > I saw that that the change failed in complication for SPARC architecture, as
    > the pins field is wraparound with CONFIG_PINCTRL in device struct. I though
    > on two options to solve the compilation error, first by adding wraparound of
    > CONFIG_PINCTRL when accessing the pins field. And the second option is to
    > add get function in pinctrl/devinfo.h file, which return the pins field, or
    > NULL in case the PINCTRL is not defined. Which option you think we can go
    > with?

    Getter with a stub sounds better to me, so you won't access some device core
    fields.

    Linus, what do you think about all these (including previous paragraph)?

    --
    With Best Regards,
    Andy Shevchenko


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