linux-kernel - Re: [PATCH v2 1/1]: iio: light: rpr0521: add missing Kconfig dependencies

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Date:   Sat, 12 Nov 2022 17:37:48 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Paul Gazzillo <paul@...zz.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Shreeya Patel <shreeya.patel@...labora.com>,
        Zhigang Shi <Zhigang.Shi@...eon.com>,
        Dmitry Osipenko <dmitry.osipenko@...labora.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1]: iio: light: rpr0521: add missing Kconfig
 dependencies

On Fri, 11 Nov 2022 10:25:39 -0500
Paul Gazzillo <paul@...zz.com> wrote:

> On 11/11/2022, Andy Shevchenko wrote:
> > On Thu, Nov 10, 2022 at 04:47:29PM -0500, Paul Gazzillo wrote:  
> > > Fix an implicit declaration of function error for rpr0521 under some configs
> > > 
> > > When CONFIG_RPR0521 is enabled without CONFIG_IIO_TRIGGERED_BUFFER,
> > > the build results in "implicit declaration of function" errors, e.g.,
> > >   drivers/iio/light/rpr0521.c:434:3: error: implicit declaration of function
> > >            'iio_trigger_poll_chained' [-Werror=implicit-function-declaration]
> > >     434 |   iio_trigger_poll_chained(data->drdy_trigger0);
> > >         |   ^~~~~~~~~~~~~~~~~~~~~~~~
> > > 
> > > This fix adds select dependencies to RPR0521's configuration declaration.
> > > 
> > > Signed-off-by: Paul Gazzillo <paul@...zz.com>
> > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=216678  
> > 
> > No need to create a bugzilla report on such tiny issues that do actually not
> > affect the working configurations.  
> 
> Understood.  Thanks for your help!

I wonder why it has taken so long for this build issue to get reported?

Ah well. This is missing a fixes tag. I added
Fixes: e12ffd241c00 ("iio: light: rpr0521 triggered buffer")

Applied to the fixes-togreg branch of iio.git.

Thanks,

Jonathan



> 
> > 
> > FWIW,
> > Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> >   
> > > ---
> > > V1 -> V2: Cleaned up commit message per reviewer comments and added link
> > >           to bug report.
> > > 
> > >  drivers/iio/light/Kconfig | 2 ++
> > >  1 file changed, 2 insertions(+)
> > > 
> > > diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
> > > index 7cf6e8490123..0d4447df7200 100644
> > > --- a/drivers/iio/light/Kconfig
> > > +++ b/drivers/iio/light/Kconfig
> > > @@ -293,6 +293,8 @@ config RPR0521
> > >  	tristate "ROHM RPR0521 ALS and proximity sensor driver"
> > >  	depends on I2C
> > >  	select REGMAP_I2C
> > > +	select IIO_BUFFER
> > > +	select IIO_TRIGGERED_BUFFER
> > >  	help
> > >  	  Say Y here if you want to build support for ROHM's RPR0521
> > >  	  ambient light and proximity sensor device.
> > > -- 
> > > 2.25.1  
> > 
> > -- 
> > With Best Regards,
> > Andy Shevchenko  
> 
> Best,
> Paul