ef6fb2d6f1
Simplify and refactor the descriptor management by removing the redundant Linked List Item (LLI) queue control logic from the AxiDMA driver. The descriptor is split into virtual descriptor and hardware LLI so that only hardware LLI memories are allocated from the DMA memory pool. Up to 64 descriptors can be allocated within a PAGE_SIZE compare to 16 descriptors in previous version. This solves the problem where an ALSA driver expects more than 16 DMA descriptors to run. Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com> Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Link: https://lore.kernel.org/r/20210125013255.25799-3-jee.heng.sia@intel.com Signed-off-by: Vinod Koul <vkoul@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.