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Pei Xiao f421105c99 iio: adc: ti_am335x_adc: Limit step_avg to valid range for gcc complains 
[ Upstream commit c9fb952360 ]

FIELD_PREP() checks that a value fits into the available bitfield, add a
check for step_avg to fix gcc complains.

which gcc complains about:
  drivers/iio/adc/ti_am335x_adc.c: In function 'tiadc_step_config':
  include/linux/compiler_types.h:572:38: error: call to
'__compiletime_assert_491' declared with attribute error: FIELD_PREP: value
too large for the field include/linux/mfd/ti_am335x_tscadc.h:58:29: note:
in expansion of macro 'FIELD_PREP'
    #define STEPCONFIG_AVG(val) FIELD_PREP(GENMASK(4, 2), (val))
                                ^~~~~~~~~~
drivers/iio/adc/ti_am335x_adc.c:127:17: note: in expansion of macro 'STEPCONFIG_AVG'
	stepconfig = STEPCONFIG_AVG(ffs(adc_dev->step_avg[i]) - 1)

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202510102117.Jqxrw1vF-lkp@intel.com/
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-01-08 10:14:11 +01:00
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README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.