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Rob Herring 9d55bebd98 of/address: Support multiple 'dma-ranges' entries
Currently, the DMA offset and mask for a device are set based only on the
first 'dma-ranges' entry. We should really be using all the entries. The
kernel doesn't yet support multiple offsets and sizes, so the best we can
do is to find the biggest size for a single offset. The algorithm is
copied from acpi_dma_get_range().

If there's different offsets from the first entry, then we warn and
continue. It really should be an error, but this will likely break
existing DTs.

Signed-off-by: Rob Herring <robh@kernel.org>
2020-02-14 15:27:08 -06:00
arch powerpc: Drop using struct of_pci_range.pci_space field 2020-02-14 14:25:20 -06:00
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.mailmap A handful of small documentation fixes that wandered in. 2020-02-07 13:03:10 -08:00
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Makefile Linux 5.6-rc1 2020-02-09 16:08:48 -08:00
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.