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5e657a8e66
If the request is out of range, returning -EINVAL seems sensible. However if there is no direct mapping available (which is a possible case), no direct mapping will ever be allowed, hence -EOPNOTSUP is probably more relevant in this case. >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/20240522145255.995778-3-miquel.raynal@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
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| rust | ||
| samples | ||
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| security | ||
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| .editorconfig | ||
| .get_maintainer.ignore | ||
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| COPYING | ||
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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.