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A mirror of the official Linux kernel repository just in case
615725a9a8
If the request is out of range, returning -EINVAL seems a better pick than -ENOTSUPP. >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. In all other cases, as part of a wider work towards using -EOPNOTSUP rather than -ENOTSUPP (which is not a SUSV4 code), let's change the error code to be uniform across spi-mem controller drivers. Finally, reword a little bit the conditions to clarify what is intended (ie. checking for the presence of a direct mapping, and also ensuring we create a dirmap only on DATA_IN flows). Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://msgid.link/r/20240522145255.995778-4-miquel.raynal@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| kernel | ||
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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.