Re: [PATCH 00/12] IIO: clang W=1 warning cleanup.

[Jonathan Cameron <jic23@kernel.org>]

On Mon, 6 Dec 2021 11:18:12 -0700
Nathan Chancellor <nathan@kernel.org> wrote:

> On Sun, Nov 28, 2021 at 05:24:33PM +0000, Jonathan Cameron wrote:
> > From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> > 
> > Hi All,
> > 
> > In the interests of noise reduction in warnings during build tests of
> > new code, this series suppresses a bunch of warnings seen with
> > LLVM=1 W=1.
> > 
> > Note I am seeing two others I haven't fixed here.  One is tied up in
> > the existing CONFIG_PM* cleanup patch set and will be dealt with as
> > part of that.  The other in tsl2772 looks like it might be a bug that
> > needs further analysis. If anyone is curious:
> > 
> > drivers/iio/light/tsl2772.c:576:24: warning: variable 'prox_diode_mask' set but not used [-Wunused-but-set-variable]
> >         int i, ret, num_leds, prox_diode_mask;     
> > 
> > As is common with series like this, some of the drivers are old
> > and as such I haven't cc'd original authors etc and would appreciate
> > a sanity check from anyone who has the time.
> > 
> > Mauro and Arnd are cc'd on a bunch of them because a media patch that
> > I happened to see had similar fixes + discussion of type to use in the
> > casting. For some others I've just picked on people who touched
> > the driver in last year or so.
> > 
> > Nothing in this series should have any functional affect.
> > 
> > Jonathan  
> 
> I build tested drivers/iio/ for arm, arm64, s390, and x86_64
> allmodconfig and did not see any warnings other than the ones mentioned
> in the commit message.
> 
> All the fixes look reasonable for the warnings.
> 
> Reviewed-by: Nathan Chancellor <nathan@kernel.org>

Thanks!

Series applied to the togreg branch of iio.git and pushed out as
testing initially to see if 0-day can find anything we missed.

Thanks,

Jonathan

> 
> > Cc: Arnd Bergmann <arnd@arndb.de>
> > Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> > Cc: Stephan Gerhold <stephan@gerhold.net>
> > Cc: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
> > Cc: Baptiste Mansuy <bmansuy@invensense.com>
> > Cc: Linus Walleij <linus.walleij@linaro.org>
> > Cc: Jonathan Albrieux <jonathan.albrieux@gmail.com>
> > 
> > Jonathan Cameron (12):
> >   iio:accel:bma180: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:dc:ina2xx-adc: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:adc:rcar: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:adc:ti-ads1015: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:amplifiers:hmc425a: Suppress clang W=1 warning about pointer to
> >     enum conversion.
> >   iio:dac:mcp4725: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:imu:inv_icm42600: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:imu:inv_mpu6050: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:magn:ak8975: Suppress clang W=1 warning about pointer to enum
> >     conversion.
> >   iio:dummy: Drop set but unused variable len.
> >   iio:accel:bmc150: Mark structure __maybe_unused as only needed with
> >     for pm ops.
> >   iio:accel:kxcjk-1013: Mark struct __maybe_unused to avoid warning.
> > 
> >  drivers/iio/accel/bma180.c                      | 2 +-
> >  drivers/iio/accel/bmc150-accel-core.c           | 2 +-
> >  drivers/iio/accel/kxcjk-1013.c                  | 2 +-
> >  drivers/iio/adc/ina2xx-adc.c                    | 2 +-
> >  drivers/iio/adc/rcar-gyroadc.c                  | 3 +--
> >  drivers/iio/adc/ti-ads1015.c                    | 2 +-
> >  drivers/iio/amplifiers/hmc425a.c                | 2 +-
> >  drivers/iio/dac/mcp4725.c                       | 2 +-
> >  drivers/iio/dummy/iio_simple_dummy_buffer.c     | 2 --
> >  drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c | 2 +-
> >  drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c | 2 +-
> >  drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c       | 2 +-
> >  drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c       | 2 +-
> >  drivers/iio/magnetometer/ak8975.c               | 2 +-
> >  14 files changed, 13 insertions(+), 16 deletions(-)
> > 
> > -- 
> > 2.34.1
> > 
> >