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02d3b52f67
[ Upstream commit ebf35aad0baa05823df31fda42df4b67f72e6e72 ] We may want to get rid of the iio_priv_to_dev() helper. The reason is that we will hide some of the members of the iio_dev structure (to prevent drivers from accessing them directly), and that will also mean hiding the implementation of the iio_priv_to_dev() helper inside the IIO core. Hiding the implementation of iio_priv_to_dev() implies that some fast-paths may not be fast anymore, so a general idea is to try to get rid of the iio_priv_to_dev() altogether. The iio_priv() helper won't be affected by the rework, as the iio_dev struct will keep a reference to the private information. For this driver, not using iio_priv_to_dev(), means reworking some paths to pass the iio device and using iio_priv() to access the private information, and also keeping a reference to the iio device for some quirky paths. One [quirky] path is the at91_adc_workq_handler() which requires the IIO device & the state struct to push to buffers. Since this requires the back-ref to the IIO device, the at91_adc_touch_pos() also uses it. This simplifies the patch a bit. The information required in this function is mostly for debugging purposes. Replacing it with a reference to the IIO device would have been a slightly bigger change, which may not be worth it (for just the debugging purpose and given that we need the back-ref to the IIO device anyway). Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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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.