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41b86b1455When the requested dirmap accesses are outside of the window, it is probably more sensible to return -EINVAL rather than an "unsupported" error code. If however the operation in itself is not supported, then -EOPNOTSUP is likely going to be preferred as it is a standard error code. >From a caller (and reviewer) point of view, distinguising between the two may be helpful because somehow one can be "fixed" while the other will always be refused no matter how hard we try. As part of a wider work to bring spi-nand continuous reads, it was useful to easily catch the upper limit direct mapping boundaries for each controller, with the idea of enlarging this area from a page to an eraseblock, without risking too many regressions. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://msgid.link/r/20240522145255.995778-5-miquel.raynal@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| 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.