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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2021-09-24 22:24:16 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-09-28 11:22:26 +0300 |
| commit | 868ddfcef31ff93ea8961b2e81ea7fe12f6f144b (patch) | |
| tree | 8026a505f9b4509e8f2a43431ea61f0b2bffa4c6 /include/sound | |
| parent | 1465d06a6d8580e73ae65f8590392df58c5ed2fd (diff) | |
| download | linux-868ddfcef31ff93ea8961b2e81ea7fe12f6f144b.tar.xz | |
ALSA: hda: hdac_ext_stream: fix potential locking issues
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>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/hdaudio_ext.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h index 375581634143..d4e31ea16aba 100644 --- a/include/sound/hdaudio_ext.h +++ b/include/sound/hdaudio_ext.h @@ -88,6 +88,8 @@ struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_bus *bus, struct snd_pcm_substream *substream, int type); void snd_hdac_ext_stream_release(struct hdac_ext_stream *azx_dev, int type); +void snd_hdac_ext_stream_decouple_locked(struct hdac_bus *bus, + struct hdac_ext_stream *azx_dev, bool decouple); void snd_hdac_ext_stream_decouple(struct hdac_bus *bus, struct hdac_ext_stream *azx_dev, bool decouple); void snd_hdac_ext_stop_streams(struct hdac_bus *bus); |