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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2021-09-24 22:24:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-26 12:39:22 +0300 |
| commit | f751fb54f2bc71cab118855358f0f660ea934b4d (patch) | |
| tree | 2a052b71c06da12b5a851d9c0558a8328eb14ff1 /include/linux/perf_event.h | |
| parent | b3ef5051a758d8954dc0254e63aff0dd0b71b8de (diff) | |
| download | linux-f751fb54f2bc71cab118855358f0f660ea934b4d.tar.xz | |
ALSA: hda: hdac_ext_stream: fix potential locking issues
commit 868ddfcef31ff93ea8961b2e81ea7fe12f6f144b upstream.
The code for hdac_ext_stream seems inherited from hdac_stream, and
similar locking issues are present: the use of the bus->reg_lock
spinlock is inconsistent, with only writes to specific fields being
protected.
Apply similar fix as in hdac_stream by protecting all accesses to
'link_locked' and 'decoupled' fields, with a new helper
snd_hdac_ext_stream_decouple_locked() added to simplify code
changes.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210924192417.169243-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/perf_event.h')
0 files changed, 0 insertions, 0 deletions