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22c8ce0aa2When performing indirect read via external DMA the timeout for completion is set equal to the read length instead of fixed timeout value. For reads larger than 500 bytes, the timeout will continue to be equal to the read length whereas for a small read like the Read Status Register command, the timeout would be 1 or 2 milliseconds. This is not enough to cover the overhead needed in setting up DMA, in that case make sure the timeout is at least 500ms to allow DMA to finish. This solution is inline with the timeout used for Direct read via DMA. Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com> Link: https://lore.kernel.org/r/20230320095931.2651714-2-sai.krishna.potthuri@amd.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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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.