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The driver's ISR sends a 'software interrupt' event to the probe() thread using the following method: - probe(): write 0 to flag, enable s/w interrupt - probe(): poll on flag, relax using usleep_range() - ISR : write 1 to flag Replace with wake_up() / wait_event_timeout(). Besides being easier to get right, this abstraction has better timing and memory consistency properties. Tested-by: Sven Van Asbroeck <thesven73@gmail.com> # lan7430 Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com> Link: https://lore.kernel.org/r/20201123191529.14908-2-TheSven73@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.