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The RTC on some older Chromebooks can only handle alarms less than 24 hours in the future. The only way to find out is to try to set an alarm further in the future. If that fails, assume that the RTC connected to the EC can only handle less than 24 hours of alarm window, and report that value to the RTC core. After that change, it is no longer necessary to limit the alarm time when setting it. Report any excessive alarms to the caller instead. Cc: Brian Norris <briannorris@chromium.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230817225537.4053865-4-linux@roeck-us.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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.