Re: [PATCH v2 4/4] iio: pressure: hsc030pa add triggered buffer

From: Andy Shevchenko
Date: Sat Feb 10 2024 - 10:13:06 EST


On Sat, Feb 10, 2024 at 5:09 PM Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
> On Mon, 5 Feb 2024 18:39:02 +0200
> Petre Rodan <petre.rodan@xxxxxxxxxxxxxxx> wrote:
> > On Sun, Feb 04, 2024 at 06:03:28PM +0200, andy.shevchenko@xxxxxxxxx wrote:

> > > > + memcpy(&data->scan.chan[1], &data->buffer[2], 2);
> > >
> > > Hmm... We don't have fixed-size memcpy() :-(
> >
> > __be16 *ptr;
> >
> > ptr = (__be16 *) data->buffer;
> > data->scan.chan[0] = *ptr;
> > data->scan.chan[1] = *++ptr;
> >
> > is this an acceptable replacement? I do not understand that your concern was, my
> > intent was to copy exactly 2 bytes over.
>
> Andy?
>
> I'm not sure what you meant here either.

It was just a rhetorical remark, no AR implied. I.o.w. the current code is okay.

> There is an existing oddity that the read_raw deals with this as a be32 and
> masking out the right sections for each channel rather than perhaps more logical
> be16 pair here.


--
With Best Regards,
Andy Shevchenko