Re: [PATCH v3 2/2] iio: adc: add ltc2309 support

From: Liam Beguin
Date: Mon Sep 18 2023 - 12:29:07 EST


Hi Jonathan,

On Sun, Sep 10, 2023 at 03:03:33PM +0100, Jonathan Cameron wrote:
> On Sun, 3 Sep 2023 12:43:41 +0100
> Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
>
> > On Mon, 28 Aug 2023 22:41:35 -0400
> > Liam Beguin <liambeguin@xxxxxxxxx> wrote:
> >
> > > The LTC2309 is an 8-Channel, 12-Bit SAR ADC with an I2C Interface.
> > >
> > > This implements support for all single-ended and differential channels,
> > > in unipolar mode only.
> > >
> > > Signed-off-by: Liam Beguin <liambeguin@xxxxxxxxx>
> > Hi Liam,
> >
> > A few really small editorial bits in here. I'll fix them whilst applying.
> > Series applied to the togreg branch of iio.git
> >
> > Note I will be rebasing the tree on rc1 once available and in the meantime
> > this will only be pushed out as testing.
>
> A couple more static analysis reports came in (unreachable return in one pace
> and a missing static. I've fixed up in my tree.

My apologies for the delay, I was away for a few days.

Thanks for making those changes, I'll go over the comments and the
reports, and if there's anything left, I'll send an update.

> Thanks,
>
> Jonathan

Thanks again for your time,

Liam

>
> >
> > Thanks,
> >
> > Jonathan
> >
> >
> >
> > > +/**
> > > + * struct ltc2309 - internal device data structure
> > > + * @dev: Device reference
> > > + * @client: I2C reference
> > > + * @vref: External reference source
> > > + * @lock: Lock to serialize data access
> > > + * @vref_mv Internal voltage reference
> >
> > Missing : which is what the bot picked up on.
> >
> > > + */
> > > +struct ltc2309 {
> > > + struct device *dev;
> > > + struct i2c_client *client;
> > > + struct regulator *vref;
> > > + struct mutex lock; /* serialize data access */
> > > + int vref_mv;
> > > +};
> >
> > > +
> > > +void ltc2309_regulator_disable(void *regulator)
> > > +{
> > > + struct regulator *r = (struct regulator *)regulator;
> >
> > Never any need to explicitly cast from a void * to any other pointer type.
> > (C spec says it is always fine to do this :)
> >
> > Given type is obvious from use, can just do
> > regulator_disable(regulator);
> > and lose the local variable.
> >
> > > +
> > > + regulator_disable(r);
> > > +}
> >
> > ..
> > > +
> > > +static const struct of_device_id ltc2309_of_match[] = {
> > > + { .compatible = "lltc,ltc2309" },
> > > + { }
> > > +};
> > > +MODULE_DEVICE_TABLE(of, ltc2309_of_match);
> > > +
> > > +static const struct i2c_device_id ltc2309_id[] = {
> > > + { "ltc2309" },
> > > + {}
> >
> > Trivial but space between { and } for consistency.
> >
> >
>