linux-kernel - Re: [PATCH v1 1/1] iio: proximity: mb1232: Switch to use fwnode_irq

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Date:   Tue, 19 Apr 2022 12:24:26 +0200
From:   Andreas Klinger <ak@...klinger.de>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH v1 1/1] iio: proximity: mb1232: Switch to use
 fwnode_irq_get()


Jonathan Cameron <jic23@...nel.org> schrieb am Sa, 16. Apr 12:07:
> On Wed, 13 Apr 2022 21:31:23 +0300
> Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:
> 
> > We have OF-centric variant of fwnode_irq_get() in the driver.
> > Replace it with a call to an agnostic implementation.
> > 
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> 
> Whilst I 'think' this ends up being functionally identical
> I'd like to leave it a little longer to see if Andreas has
> time to take a look and verify this change is fine.
> 
> There seem to be subtle differences in the irq setup as the
> new code does a sanity check on the domain being available
> and defers if not which I don't think happens with the
> existing code.

Anyway interrupts are optional and the driver will work without i don't see any
issue here.

Acked-by: Andreas Klinger <ak@...klinger.de>

> 
> Thanks,
> 
> Jonathan
> 
> 
> > ---
> >  drivers/iio/proximity/mb1232.c | 8 +++++---
> >  1 file changed, 5 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/iio/proximity/mb1232.c b/drivers/iio/proximity/mb1232.c
> > index ad4b1fb2607a..0bca5f74de68 100644
> > --- a/drivers/iio/proximity/mb1232.c
> > +++ b/drivers/iio/proximity/mb1232.c
> > @@ -10,12 +10,14 @@
> >   * https://www.maxbotix.com/documents/I2CXL-MaxSonar-EZ_Datasheet.pdf
> >   */
> >  
> > +#include <linux/bitops.h>
> >  #include <linux/err.h>
> >  #include <linux/i2c.h>
> > -#include <linux/of_irq.h>
> >  #include <linux/delay.h>
> > +#include <linux/mod_devicetable.h>
> >  #include <linux/module.h>
> > -#include <linux/bitops.h>
> > +#include <linux/property.h>
> > +
> >  #include <linux/iio/iio.h>
> >  #include <linux/iio/sysfs.h>
> >  #include <linux/iio/buffer.h>
> > @@ -209,7 +211,7 @@ static int mb1232_probe(struct i2c_client *client,
> >  
> >  	init_completion(&data->ranging);
> >  
> > -	data->irqnr = irq_of_parse_and_map(dev->of_node, 0);
> > +	data->irqnr = fwnode_irq_get(dev_fwnode(&client->dev), 0);
> >  	if (data->irqnr <= 0) {
> >  		/* usage of interrupt is optional */
> >  		data->irqnr = -1;
> 

-- 
Andreas Klinger
Grabenreith 27
84508 Burgkirchen
+49 8623 919966
ak@...klinger.de
www.it-klinger.de
www.grabenreith.de