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Filename Latest commit message Latest commit date
Kai Vehmanen 8c5f11093e ALSA: hda/hdmi: fix race in monitor detection during probe
[ Upstream commit ca76282b6faffc83601c25bd2a95f635c03503ef ]

A race exists between build_pcms() and build_controls() phases of codec
setup. Build_pcms() sets up notifier for jack events. If a monitor event
is received before build_controls() is run, the initial jack state is
lost and never reported via mixer controls.

The problem can be hit at least with SOF as the controller driver. SOF
calls snd_hda_codec_build_controls() in its workqueue-based probe and
this can be delayed enough to hit the race condition.

Fix the issue by invalidating the per-pin ELD information when
build_controls() is called. The existing call to hdmi_present_sense()
will update the ELD contents. This ensures initial monitor state is
correctly reflected via mixer controls.

BugLink: https://github.com/thesofproject/linux/issues/1687
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200428123836.24512-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-05-20 08:20:15 +02:00
arch riscv: fix vdso build with lld 2020-05-20 08:20:13 +02:00
block iocost: protect iocg->abs_vdebt with iocg->waitq.lock 2020-05-14 07:58:27 +02:00
certs
crypto
Documentation
drivers cpufreq: intel_pstate: Only mention the BIOS disabling turbo mode once 2020-05-20 08:20:14 +02:00
fs fanotify: merge duplicate events on parent and child 2020-05-14 07:58:30 +02:00
include tcp: fix SO_RCVLOWAT hangs with fat skbs 2020-05-20 08:20:10 +02:00
init
ipc ipc/mqueue.c: change __do_notify() to bypass check_kill_permission() 2020-05-14 07:58:26 +02:00
kernel umh: fix memory leak on execve failure 2020-05-20 08:20:13 +02:00
lib lib: devres: add a helper function for ioremap_uc 2020-05-10 10:31:30 +02:00
LICENSES
mm shmem: fix possible deadlocks on shmlock_user_lock 2020-05-20 08:20:03 +02:00
net net: tcp: fix rx timestamp behavior for tcp_recvmsg 2020-05-20 08:20:12 +02:00
samples
scripts scripts/decodecode: fix trapping instruction formatting 2020-05-14 07:58:29 +02:00
security
sound ALSA: hda/hdmi: fix race in monitor detection during probe 2020-05-20 08:20:15 +02:00
tools selftests/ftrace: Check the first record for kprobe_args_type.tc 2020-05-20 08:20:14 +02:00
usr
virt KVM: arm: vgic: Synchronize the whole guest on GIC{D,R}_I{S,C}ACTIVER read 2020-05-20 08:20:04 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.41 2020-05-14 07:58:30 +02:00
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.