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Kai Vehmanen 003b786b67 ASoC: SOF: ipc3-topology: use old pipeline teardown flow with SOF2.1 and older Originally in commit `b2ebcf42a4` ("ASoC: SOF: free widgets in sof_tear_down_pipelines() for static pipelines"), freeing of pipeline components at suspend was only done with recent FW as there were known limitations in older firmware versions. Tests show that if static pipelines are used, i.e. all pipelines are setup whenever firmware is powered up, the reverse action of freeing all components at power down, leads to firmware failures with also SOF2.0 and SOF2.1 based firmware. The problems can be specific to certain topologies with e.g. components not prepared to be freed at suspend (as this did not happen with older SOF kernels). To avoid hitting these problems when kernel is upgraded and used with an older firmware, bump the firmware requirement to SOF2.2 or newer. If an older firmware is used, and pipeline is a static one, do not free the components at suspend. This ensures the suspend flow remains backwards compatible with older firmware versions. This limitation does not apply if the product configuration is updated to dynamic pipelines. The limitation is not linked to firmware ABI, as the interface to free pipeline components has been available already before ABI3.19. The problem is in the implementation, so firmware version should be used to decide whether it is safe to use the newer flow or not. This patch adds a new SOF_FW_VER() macro to compare SOF firmware release versions. Link: https://github.com/thesofproject/sof/issues/6475 Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Link: https://lore.kernel.org/r/20221101114913.1292671-1-kai.vehmanen@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>		2022-11-01 18:28:07 +00:00
arch	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
block	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
certs	certs: make system keyring depend on built-in x509 parser	2022-09-24 04:31:18 +09:00
crypto	treewide: use get_random_bytes() when possible	2022-10-11 17:42:58 -06:00
Documentation	MAINTAINERS: update Tzung-Bi's email address	2022-10-26 14:17:37 +01:00
drivers	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
fs	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
include	ASoC: SOF: ipc3-topology: use old pipeline teardown flow with SOF2.1 and older	2022-11-01 18:28:07 +00:00
init	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
io_uring	io_uring/rw: ensure kiocb_end_write() is always called	2022-10-12 16:30:56 -06:00
ipc	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
kernel	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
lib	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
LICENSES	LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers	2021-12-16 14:33:10 +01:00
mm	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
net	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
rust	Kbuild: add Rust support	2022-09-28 09:02:20 +02:00
samples	VFIO updates for v6.1-rc1	2022-10-12 14:46:48 -07:00
scripts	Kbuild fixes for v6.1	2022-10-16 11:12:22 -07:00
security	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
sound	ASoC: SOF: ipc3-topology: use old pipeline teardown flow with SOF2.1 and older	2022-11-01 18:28:07 +00:00
tools	perf tools changes for v6.1: 2nd batch	2022-10-16 15:14:29 -07:00
usr	usr/gen_init_cpio.c: remove unnecessary -1 values from int file	2022-10-03 14:21:44 -07:00
virt	VFIO updates for v6.1-rc1	2022-10-12 14:46:48 -07:00
.clang-format	PCI/DOE: Add DOE mailbox support functions	2022-07-19 15:38:04 -07:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore	get_maintainer: add Alan to .get_maintainer.ignore	2022-08-20 15:17:44 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	Kbuild: add Rust support	2022-09-28 09:02:20 +02:00
.mailmap	MAINTAINERS: update Tzung-Bi's email address	2022-10-26 14:17:37 +01:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	drm for 5.20/6.0	2022-08-03 19:52:08 -07:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	MAINTAINERS: update Tzung-Bi's email address	2022-10-26 14:17:37 +01:00
Makefile	Linux 6.1-rc1	2022-10-16 15:36:24 -07:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

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.