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[00/24] IIO: Clean up ACPI_PTR() usage.

Message ID 20231231183514.566609-1-jic23@kernel.org (mailing list archive)
Headers show
Series IIO: Clean up ACPI_PTR() usage. | expand

Message

Jonathan Cameron Dec. 31, 2023, 6:34 p.m. UTC
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Many of these patches touch ancient drivers so the authors have long
moved on to other things. As such I'd appreciate it if anyone has time
to take a look!

The initial part of this series deals with cases where unused variable
warnings are generated with !CONFIG_ACPI but they most date back long
enough to predate this being reported by lkp in general and the lkp folk
have gotten push back not to push out such reports due to the high level
of noise. I think some of these were reported to me directly on my
Huawei.com account but aren't on lore.kernel.org. If I can easily
track down appropriate closes tags I will add them when applying.

The last few patches are for drivers that did have the right protections
but where the usage was so trivial I'm not convinced they took the best
approach. In the interests of not leaving cases of what I consider an
undesirable pattern around for people to copy I have dropped the ACPI_PTR()
usage and config guards from those as well.

There are 3 remaining cases of ACPI_PTR() in IIO. In each of those there
is a significant chunk of ACPI specific handling so the relevant guards
are there anyway and the complexity is more easily justified. I have
not intent to touch those at this time.

Jonathan Cameron (24):
  iio: accel: da280: Stop using ACPI_PTR()
  iio: accel: kxcjk-1013: Move acpi_device_id table under ifdef
    CONFIG_ACPI
  iio: accel: mma9551: Drop ACPI_PTR() usage
  iio: accel: mma9553: Drop ACPI_PTR() usage
  iio: accel: mxc4005: Drop ACPI_PTR() usage
  iio: accel: mxc6255: Drop ACPI_PTR() usage
  iio: accel: stk8ba50: Drop ACPI_PTR() usage
  iio: accel: bmc150: Drop ACPI_PTR()
  iio: gyro: bmg160: Drop ACPI_PTR() usage
  iio: humidity: hts221: Drop ACPI_PTR() usage
  iio: imu: fxos8700: Drop ACPI_PTR() usage
  iio: imu: kmx61: Drop ACPI_PTR() usage
  iio: light: jsa1212: Drop ACPI_PTR() usage
  iio: light: ltr501: Drop ACPI_PTR() usage
  iio: light: rpr0521: Drop ACPI_PTR() usage
  iio: light: stk3310: Drop ACPI_PTR() usage
  iio: light: us5182d: Drop ACPI_PTR() usage
  iio: magnetometer: bmc150: Drop ACPI_PTR() usage
  iio: magnetometer: mmc35240: Drop ACPI_PTR() usage
  iio: potentiometer: max5487: Drop ACPI_PTR() usage
  iio: st_sensors: drop ACPI_PTR() and CONFIG_ACPI guards
  iio: pressure: hp206c: drop ACPI_PTR() and CONFIG_ACPI guards
  iio: light: max44000: drop ACPI_PTR() and CONFIG_ACPI guards
  iio: adc: ti-adc109s102: drop ACPI_PTR() and CONFIG_ACPI guards

 drivers/iio/accel/bmc150-accel-i2c.c       |  2 +-
 drivers/iio/accel/bmc150-accel-spi.c       |  3 +-
 drivers/iio/accel/da280.c                  |  2 +-
 drivers/iio/accel/kxcjk-1013.c             | 33 +++++++++++-----------
 drivers/iio/accel/mma9551.c                |  4 +--
 drivers/iio/accel/mma9553.c                |  4 +--
 drivers/iio/accel/mxc4005.c                |  4 +--
 drivers/iio/accel/mxc6255.c                |  4 +--
 drivers/iio/accel/st_accel_i2c.c           |  5 +---
 drivers/iio/accel/stk8ba50.c               |  4 +--
 drivers/iio/adc/ti-adc108s102.c            |  4 +--
 drivers/iio/gyro/bmg160_i2c.c              |  4 +--
 drivers/iio/humidity/hts221_i2c.c          |  4 +--
 drivers/iio/imu/fxos8700_i2c.c             |  3 +-
 drivers/iio/imu/fxos8700_spi.c             |  3 +-
 drivers/iio/imu/kmx61.c                    |  2 +-
 drivers/iio/light/jsa1212.c                |  4 +--
 drivers/iio/light/ltr501.c                 |  3 +-
 drivers/iio/light/max44000.c               |  6 ++--
 drivers/iio/light/rpr0521.c                |  4 +--
 drivers/iio/light/stk3310.c                |  4 +--
 drivers/iio/light/us5182d.c                |  4 +--
 drivers/iio/magnetometer/bmc150_magn_i2c.c |  3 +-
 drivers/iio/magnetometer/bmc150_magn_spi.c |  3 +-
 drivers/iio/magnetometer/mmc35240.c        |  4 +--
 drivers/iio/potentiometer/max5487.c        |  4 +--
 drivers/iio/pressure/hp206c.c              |  6 ++--
 drivers/iio/pressure/st_pressure_i2c.c     |  5 +---
 28 files changed, 60 insertions(+), 75 deletions(-)

Comments

Andy Shevchenko Jan. 1, 2024, 11:48 p.m. UTC | #1
On Sun, Dec 31, 2023 at 8:35 PM Jonathan Cameron <jic23@kernel.org> wrote:
>
> From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
>
> Many of these patches touch ancient drivers so the authors have long
> moved on to other things. As such I'd appreciate it if anyone has time
> to take a look!
>
> The initial part of this series deals with cases where unused variable
> warnings are generated with !CONFIG_ACPI but they most date back long
> enough to predate this being reported by lkp in general and the lkp folk
> have gotten push back not to push out such reports due to the high level
> of noise. I think some of these were reported to me directly on my
> Huawei.com account but aren't on lore.kernel.org. If I can easily
> track down appropriate closes tags I will add them when applying.
>
> The last few patches are for drivers that did have the right protections
> but where the usage was so trivial I'm not convinced they took the best
> approach. In the interests of not leaving cases of what I consider an
> undesirable pattern around for people to copy I have dropped the ACPI_PTR()
> usage and config guards from those as well.
>
> There are 3 remaining cases of ACPI_PTR() in IIO. In each of those there
> is a significant chunk of ACPI specific handling so the relevant guards
> are there anyway and the complexity is more easily justified. I have
> not intent to touch those at this time.

Long awaited series, thanks for doing it!
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
(with some individual nit-picks that you may fix whilst applying)

Side note: We now have: array_size.h, container_of.h, hex.h,
kstrtox.h, sprintf.h.
You may start considering replacing "proxy" headers such as kernel.h
in the code.

> Jonathan Cameron (24):
>   iio: accel: da280: Stop using ACPI_PTR()
>   iio: accel: kxcjk-1013: Move acpi_device_id table under ifdef
>     CONFIG_ACPI
>   iio: accel: mma9551: Drop ACPI_PTR() usage
>   iio: accel: mma9553: Drop ACPI_PTR() usage
>   iio: accel: mxc4005: Drop ACPI_PTR() usage
>   iio: accel: mxc6255: Drop ACPI_PTR() usage
>   iio: accel: stk8ba50: Drop ACPI_PTR() usage
>   iio: accel: bmc150: Drop ACPI_PTR()
>   iio: gyro: bmg160: Drop ACPI_PTR() usage
>   iio: humidity: hts221: Drop ACPI_PTR() usage
>   iio: imu: fxos8700: Drop ACPI_PTR() usage
>   iio: imu: kmx61: Drop ACPI_PTR() usage
>   iio: light: jsa1212: Drop ACPI_PTR() usage
>   iio: light: ltr501: Drop ACPI_PTR() usage
>   iio: light: rpr0521: Drop ACPI_PTR() usage
>   iio: light: stk3310: Drop ACPI_PTR() usage
>   iio: light: us5182d: Drop ACPI_PTR() usage
>   iio: magnetometer: bmc150: Drop ACPI_PTR() usage
>   iio: magnetometer: mmc35240: Drop ACPI_PTR() usage
>   iio: potentiometer: max5487: Drop ACPI_PTR() usage
>   iio: st_sensors: drop ACPI_PTR() and CONFIG_ACPI guards
>   iio: pressure: hp206c: drop ACPI_PTR() and CONFIG_ACPI guards
>   iio: light: max44000: drop ACPI_PTR() and CONFIG_ACPI guards
>   iio: adc: ti-adc109s102: drop ACPI_PTR() and CONFIG_ACPI guards
>
>  drivers/iio/accel/bmc150-accel-i2c.c       |  2 +-
>  drivers/iio/accel/bmc150-accel-spi.c       |  3 +-
>  drivers/iio/accel/da280.c                  |  2 +-
>  drivers/iio/accel/kxcjk-1013.c             | 33 +++++++++++-----------
>  drivers/iio/accel/mma9551.c                |  4 +--
>  drivers/iio/accel/mma9553.c                |  4 +--
>  drivers/iio/accel/mxc4005.c                |  4 +--
>  drivers/iio/accel/mxc6255.c                |  4 +--
>  drivers/iio/accel/st_accel_i2c.c           |  5 +---
>  drivers/iio/accel/stk8ba50.c               |  4 +--
>  drivers/iio/adc/ti-adc108s102.c            |  4 +--
>  drivers/iio/gyro/bmg160_i2c.c              |  4 +--
>  drivers/iio/humidity/hts221_i2c.c          |  4 +--
>  drivers/iio/imu/fxos8700_i2c.c             |  3 +-
>  drivers/iio/imu/fxos8700_spi.c             |  3 +-
>  drivers/iio/imu/kmx61.c                    |  2 +-
>  drivers/iio/light/jsa1212.c                |  4 +--
>  drivers/iio/light/ltr501.c                 |  3 +-
>  drivers/iio/light/max44000.c               |  6 ++--
>  drivers/iio/light/rpr0521.c                |  4 +--
>  drivers/iio/light/stk3310.c                |  4 +--
>  drivers/iio/light/us5182d.c                |  4 +--
>  drivers/iio/magnetometer/bmc150_magn_i2c.c |  3 +-
>  drivers/iio/magnetometer/bmc150_magn_spi.c |  3 +-
>  drivers/iio/magnetometer/mmc35240.c        |  4 +--
>  drivers/iio/potentiometer/max5487.c        |  4 +--
>  drivers/iio/pressure/hp206c.c              |  6 ++--
>  drivers/iio/pressure/st_pressure_i2c.c     |  5 +---
>  28 files changed, 60 insertions(+), 75 deletions(-)
>
> --
> 2.43.0
>
Jonathan Cameron Jan. 7, 2024, 4:41 p.m. UTC | #2
On Tue, 2 Jan 2024 01:48:07 +0200
Andy Shevchenko <andy.shevchenko@gmail.com> wrote:

> On Sun, Dec 31, 2023 at 8:35 PM Jonathan Cameron <jic23@kernel.org> wrote:
> >
> > From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> >
> > Many of these patches touch ancient drivers so the authors have long
> > moved on to other things. As such I'd appreciate it if anyone has time
> > to take a look!
> >
> > The initial part of this series deals with cases where unused variable
> > warnings are generated with !CONFIG_ACPI but they most date back long
> > enough to predate this being reported by lkp in general and the lkp folk
> > have gotten push back not to push out such reports due to the high level
> > of noise. I think some of these were reported to me directly on my
> > Huawei.com account but aren't on lore.kernel.org. If I can easily
> > track down appropriate closes tags I will add them when applying.
> >
> > The last few patches are for drivers that did have the right protections
> > but where the usage was so trivial I'm not convinced they took the best
> > approach. In the interests of not leaving cases of what I consider an
> > undesirable pattern around for people to copy I have dropped the ACPI_PTR()
> > usage and config guards from those as well.
> >
> > There are 3 remaining cases of ACPI_PTR() in IIO. In each of those there
> > is a significant chunk of ACPI specific handling so the relevant guards
> > are there anyway and the complexity is more easily justified. I have
> > not intent to touch those at this time.  
> 
> Long awaited series, thanks for doing it!
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> (with some individual nit-picks that you may fix whilst applying)

Thanks. Mostly so I can forget about this series, I've made the tweaks
and applied the lot to the togreg branch of iio.git which will get rebased
on rc1 in a few weeks time.  Happy to add more tags etc or indeed drop
any problematic patches if I get any more feedback in the meantime!

> 
> Side note: We now have: array_size.h, container_of.h, hex.h,
> kstrtox.h, sprintf.h.
> You may start considering replacing "proxy" headers such as kernel.h
> in the code.

Hmm. That's more of a nice to have than this set where it's about
getting 0-day to stop pestering me :) 

Worth doing at some point though, perhaps as part of more substantial
driver clean ups.

Thanks,

Jonathan

> 
> > Jonathan Cameron (24):
> >   iio: accel: da280: Stop using ACPI_PTR()
> >   iio: accel: kxcjk-1013: Move acpi_device_id table under ifdef
> >     CONFIG_ACPI
> >   iio: accel: mma9551: Drop ACPI_PTR() usage
> >   iio: accel: mma9553: Drop ACPI_PTR() usage
> >   iio: accel: mxc4005: Drop ACPI_PTR() usage
> >   iio: accel: mxc6255: Drop ACPI_PTR() usage
> >   iio: accel: stk8ba50: Drop ACPI_PTR() usage
> >   iio: accel: bmc150: Drop ACPI_PTR()
> >   iio: gyro: bmg160: Drop ACPI_PTR() usage
> >   iio: humidity: hts221: Drop ACPI_PTR() usage
> >   iio: imu: fxos8700: Drop ACPI_PTR() usage
> >   iio: imu: kmx61: Drop ACPI_PTR() usage
> >   iio: light: jsa1212: Drop ACPI_PTR() usage
> >   iio: light: ltr501: Drop ACPI_PTR() usage
> >   iio: light: rpr0521: Drop ACPI_PTR() usage
> >   iio: light: stk3310: Drop ACPI_PTR() usage
> >   iio: light: us5182d: Drop ACPI_PTR() usage
> >   iio: magnetometer: bmc150: Drop ACPI_PTR() usage
> >   iio: magnetometer: mmc35240: Drop ACPI_PTR() usage
> >   iio: potentiometer: max5487: Drop ACPI_PTR() usage
> >   iio: st_sensors: drop ACPI_PTR() and CONFIG_ACPI guards
> >   iio: pressure: hp206c: drop ACPI_PTR() and CONFIG_ACPI guards
> >   iio: light: max44000: drop ACPI_PTR() and CONFIG_ACPI guards
> >   iio: adc: ti-adc109s102: drop ACPI_PTR() and CONFIG_ACPI guards
> >
> >  drivers/iio/accel/bmc150-accel-i2c.c       |  2 +-
> >  drivers/iio/accel/bmc150-accel-spi.c       |  3 +-
> >  drivers/iio/accel/da280.c                  |  2 +-
> >  drivers/iio/accel/kxcjk-1013.c             | 33 +++++++++++-----------
> >  drivers/iio/accel/mma9551.c                |  4 +--
> >  drivers/iio/accel/mma9553.c                |  4 +--
> >  drivers/iio/accel/mxc4005.c                |  4 +--
> >  drivers/iio/accel/mxc6255.c                |  4 +--
> >  drivers/iio/accel/st_accel_i2c.c           |  5 +---
> >  drivers/iio/accel/stk8ba50.c               |  4 +--
> >  drivers/iio/adc/ti-adc108s102.c            |  4 +--
> >  drivers/iio/gyro/bmg160_i2c.c              |  4 +--
> >  drivers/iio/humidity/hts221_i2c.c          |  4 +--
> >  drivers/iio/imu/fxos8700_i2c.c             |  3 +-
> >  drivers/iio/imu/fxos8700_spi.c             |  3 +-
> >  drivers/iio/imu/kmx61.c                    |  2 +-
> >  drivers/iio/light/jsa1212.c                |  4 +--
> >  drivers/iio/light/ltr501.c                 |  3 +-
> >  drivers/iio/light/max44000.c               |  6 ++--
> >  drivers/iio/light/rpr0521.c                |  4 +--
> >  drivers/iio/light/stk3310.c                |  4 +--
> >  drivers/iio/light/us5182d.c                |  4 +--
> >  drivers/iio/magnetometer/bmc150_magn_i2c.c |  3 +-
> >  drivers/iio/magnetometer/bmc150_magn_spi.c |  3 +-
> >  drivers/iio/magnetometer/mmc35240.c        |  4 +--
> >  drivers/iio/potentiometer/max5487.c        |  4 +--
> >  drivers/iio/pressure/hp206c.c              |  6 ++--
> >  drivers/iio/pressure/st_pressure_i2c.c     |  5 +---
> >  28 files changed, 60 insertions(+), 75 deletions(-)
> >
> > --
> > 2.43.0
> >  
> 
>