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c1778e5819
While ioctls normally return a negative error or 0 on success, this is not the case for CROS_EC_DEV_IOCXCMD in the cros_ec driver, which returns the number of bytes read instead. However, CROS_EC_DEV_IOCRDMEM in the same driver does not return the number of byte read on success. This is both inconsistent and problematic, since the amount of returned data can be dynamic. Have it return the number of data bytes for consistency. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Lee Jones <lee.jones@linaro.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 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.