mainlining shenanigans
7726e49837
As the register map is 16-bit or 32-bit big-endian, the 24-bit DSP words appear padded and with the bytes swapped. When reading a raw stream of bytes, the pad bytes must be removed and the data bytes swapped back to their original order. The previous implementation of this assumed that the be32_to_cpu() in wm_adsp_read_data_block() would swap back to little-endian. But this is obviously only true on a little-endian CPU. It also made two walks through the data, once to endian-swap and again to strip the pad bytes. This patch re-works the code so that the endian-swap and unpad are done together in a single walk, and it is not dependent on the endianness of the CPU. The data_word_size argument to wm_adsp_remove_padding() has been dropped because currently this is always 3. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://lore.kernel.org/r/20201216112512.26503-1-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.