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edff26d038
commit 6d21f2c2dd843bceefd9455f2919f6bb526797f0 upstream.
Since commit 2718f15403fb ("iio: sanity check available_scan_masks array"),
booting a board populated with a MAX11601 results in a flood of warnings:
max1363 1-0064: available_scan_mask 8 subset of 0. Never used
max1363 1-0064: available_scan_mask 9 subset of 0. Never used
max1363 1-0064: available_scan_mask 10 subset of 0. Never used
max1363 1-0064: available_scan_mask 11 subset of 0. Never used
max1363 1-0064: available_scan_mask 12 subset of 0. Never used
max1363 1-0064: available_scan_mask 13 subset of 0. Never used
...
These warnings are caused by incorrect offsets used for differential
channels in the MAX1363_4X_CHANS() and MAX1363_8X_CHANS() macros.
The max1363_mode_table[] defines the differential channel mappings as
follows:
MAX1363_MODE_DIFF_SINGLE(0, 1, 1 << 12),
MAX1363_MODE_DIFF_SINGLE(2, 3, 1 << 13),
MAX1363_MODE_DIFF_SINGLE(4, 5, 1 << 14),
MAX1363_MODE_DIFF_SINGLE(6, 7, 1 << 15),
MAX1363_MODE_DIFF_SINGLE(8, 9, 1 << 16),
MAX1363_MODE_DIFF_SINGLE(10, 11, 1 << 17),
MAX1363_MODE_DIFF_SINGLE(1, 0, 1 << 18),
MAX1363_MODE_DIFF_SINGLE(3, 2, 1 << 19),
MAX1363_MODE_DIFF_SINGLE(5, 4, 1 << 20),
MAX1363_MODE_DIFF_SINGLE(7, 6, 1 << 21),
MAX1363_MODE_DIFF_SINGLE(9, 8, 1 << 22),
MAX1363_MODE_DIFF_SINGLE(11, 10, 1 << 23),
Update the macros to follow this same pattern, ensuring that the scan masks
are valid and preventing the warnings.
Cc: stable@vger.kernel.org
Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/20250516173900.677821-1-festevam@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 Restructured Text 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.