unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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Linux kernel modifications for the Kernel Hacking exam
1072781 commits 7 branches 0 tags 3.3 GiB
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Kai Vehmanen c74193787b ALSA: hda/hdmi: fix warning about PCM count when used with SOF 
With commit 13046370c4 ("ALSA: hda/hdmi: let new platforms assign the
pcm slot dynamically"), old behaviour to consider the HDA pin number,
when choosing PCM to assign, was dropped.

Build on this change and limit the number of PCMs created to number of
converters (= maximum number of concurrent display/receivers) when
"mst_no_extra_pcms" and "dyn_pcm_no_legacy" quirks are both set.

Fix the check in hdmi_find_pcm_slot() to ensure only spec->pcm_used
entries are considered in the search. Elsewhere in the driver
spec->pcm_used is already checked properly.

Doing this avoids following warning at SOF driver probe for multiple
machine drivers:

[  112.425297] sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no
PCM in topology for HDMI converter 4
[  112.425298] sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no
PCM in topology for HDMI converter 5
[  112.425299] sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no
PCM in topology for HDMI converter 6

Fixes: 13046370c4 ("ALSA: hda/hdmi: let new platforms assign the pcm slot dynamically")
BugLink: https://github.com/thesofproject/linux/issues/2573
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20220414150516.3638283-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-04-15 09:21:02 +02:00
arch ASoC: Rename tlv320aic31xx-micbias.h as tlv320aic31xx.h 2022-01-24 13:31:52 +00:00
block bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
certs certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty 2022-01-23 00:08:44 +09:00
crypto
Documentation ALSA: hda/realtek: Add alc256-samsung-headphone fixup 2022-03-22 21:51:02 +01:00
drivers ASoC: Updates for v5.18 2022-03-21 16:19:21 +01:00
fs bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
include ALSA: memalloc: Add fallback SG-buffer allocations for x86 2022-04-13 07:48:53 +02:00
init lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() 2022-01-22 08:33:37 +02:00
ipc proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
kernel ftrace: Fix s390 breakage from sorting mcount tables 2022-01-23 08:07:02 +02:00
lib bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
LICENSES
mm bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
net bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
samples
scripts Devicetree fixes for v5.17, take 1: 2022-01-22 09:52:17 +02:00
security
sound ALSA: hda/hdmi: fix warning about PCM count when used with SOF 2022-04-15 09:21:02 +02:00
tools kselftest: alsa: fix spelling mistake "desciptor" -> "descriptor" 2022-02-08 08:24:42 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-01-22 21:48:45 +09:00
virt Generic: 2022-01-22 09:40:01 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS ASoC: Updates for v5.18 2022-03-21 16:19:21 +01:00
Makefile Linux 5.17-rc1 2022-01-23 10:12:53 +02:00
README

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.