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When a platform is booted with devicetree and does not provide a platform data structure, the driver creates one internally. enable_dma should not be set in this structure when creating it; the probe function will set it later if DMA channels are specified via the devicetree. Setting enable_dma = 1 when creating this internal platform data can lead to pl022_dma_probe() finding bogus DMA channels (since there is no channel filter specified) when no DMA channels are specified in the devicetree. Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Acked-by: Dhruva Gole <d-gole@ti.com> Link: https://lore.kernel.org/r/20230102160852.3090202-1-vincent.whitchurch@axis.com Signed-off-by: Mark Brown <broonie@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.