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cf6ea95423
Some watchdog devices might conditionally support pretimeouts (e.g. if an interrupt is exposed for the device) but some watchdog drivers might still define the set_pretimeout operation (e.g. the mtk_wdt driver) and indicate support at runtime through the WDIOF_PRETIMEOUT flag. If the kernel is compiled with CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT enabled, watchdog_set_pretimeout would run the driver specific set_pretimeout even if WDIOF_PRETIMEOUT is not set which might have unintended consequences. So this change checks that the device flags and only runs the driver operation if pretimeouts are supported. Signed-off-by: Curtis Klein <curtis.klein@hpe.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/1624751265-24785-1-git-send-email-curtis.klein@hpe.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.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.