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RTC chips on some older Chromebooks can only handle alarms less than 24 hours in the future. Attempts to set an alarm beyond that range fails. The most severe impact of this limitation is that suspend requests fail if alarmtimer_suspend() tries to set an alarm for more than 24 hours in the future. Try to set the real-time alarm to just below 24 hours if setting it to a larger value fails to work around the problem. While not perfect, it is better than just failing the call. A similar workaround is already implemented in the rtc-tps6586x driver. Drop error messages in cros_ec_rtc_get() and cros_ec_rtc_set() since the calling code also logs an error and to avoid spurious error messages if setting the alarm ultimately succeeds. Cc: Brian Norris <briannorris@chromium.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Commit: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Reviewed-by: Brian Norris <briannorris@chromium.org> Tested-by: Brian Norris <briannorris@chromium.org> Link: https://lore.kernel.org/r/20221029005400.2712577-1-linux@roeck-us.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
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| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.