On Thu, 2 Sep 2021 10:55:19 +0200
Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote:
> Hi Nuno,
>
> "Sa, Nuno" <Nuno.Sa@xxxxxxxxxx> wrote on Fri, 20 Aug 2021 07:23:33
> +0000:
>
> > > -----Original Message-----
> > > From: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
> > > Sent: Wednesday, August 18, 2021 1:12 PM
> > > To: Jonathan Cameron <jic23@xxxxxxxxxx>; Lars-Peter Clausen
> > > <lars@xxxxxxxxxx>
> > > Cc: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx>; linux-
> > > iio@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Miquel Raynal
> > > <miquel.raynal@xxxxxxxxxxx>
> > > Subject: [PATCH 11/16] iio: adc: max1027: Separate the IRQ handler
> > > from the read logic
> > >
> > > [External]
> > >
> > > Create a max1027_read_scan() helper which will make clearer the
> > > future IRQ
> > > handler updates (no functional change).
> > >
> > > Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
> > > ---
> > > drivers/iio/adc/max1027.c | 27 +++++++++++++++++++++------
> > > 1 file changed, 21 insertions(+), 6 deletions(-)
> > >
> > > diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
> > > index 83526f3d7d3a..afc3ce69f7ea 100644
> > > --- a/drivers/iio/adc/max1027.c
> > > +++ b/drivers/iio/adc/max1027.c
> > > @@ -427,19 +427,18 @@ static int
> > > max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
> > > return 0;
> > > }
> > >
> > > -static irqreturn_t max1027_trigger_handler(int irq, void *private)
> > > +static int max1027_read_scan(struct iio_dev *indio_dev)
> > > {
> > > - struct iio_poll_func *pf = private;
> > > - struct iio_dev *indio_dev = pf->indio_dev;
> > > struct max1027_state *st = iio_priv(indio_dev);
> > > unsigned int scanned_chans = fls(*indio_dev-
> > > >active_scan_mask);
> > > u16 *buf = st->buffer;
> > > unsigned int bit;
> > > -
> > > - pr_debug("%s(irq=%d, private=0x%p)\n", __func__, irq,
> > > private);
> > > + int ret;
> > >
> > > /* fill buffer with all channel */
> > > - spi_read(st->spi, st->buffer, scanned_chans * 2);
> > > + ret = spi_read(st->spi, st->buffer, scanned_chans * 2);
> > > + if (ret < 0)
> > > + return ret;
> > >
> > > /* Only keep the channels selected by the user */
> > > for_each_set_bit(bit, indio_dev->active_scan_mask,
> > > @@ -451,6 +450,22 @@ static irqreturn_t max1027_trigger_handler(int
> > > irq, void *private)
> > >
> > > iio_push_to_buffers(indio_dev, st->buffer);
> > >
> > > + return 0;
> > > +}
> > > +
> > > +static irqreturn_t max1027_trigger_handler(int irq, void *private)
> > > +{
> > > + struct iio_poll_func *pf = private;
> > > + struct iio_dev *indio_dev = pf->indio_dev;
> > > + int ret;
> > > +
> > > + pr_debug("%s(irq=%d, private=0x%p)\n", __func__, irq,
> > > private);
> > > +
> >
> > This should be more consistent... use 'dev_err()'. I would also
> > argue to use the spi dev as the driver state structure holds a
> > pointer to it...
>
> I honestly don't see the point of these debug messages (there is
> another useless pr_debug in probe). I kept it here as I am just moving
> code around without any changes, but if you don't like it (me neither)
> I'll add a simple patch dropping them.
Go for it :)
>
> Thanks,
> Miquèl
