From: Jaroslav Kysela perex@perex.cz
[ Upstream commit df5215618fbe425875336d3a2d31bd599ae8c401 ]
When the trigger_tstamp_latched flag is set, the PCM core code assumes that the low-level driver handles the trigger timestamping itself. Ensure that runtime->trigger_tstamp is always updated.
Buglink: https://github.com/alsa-project/alsa-lib/issues/387 Reported-by: Zeno Endemann zeno.endemann@mailbox.org Signed-off-by: Jaroslav Kysela perex@perex.cz Link: https://patch.msgid.link/20241002081306.1788405-1-perex@perex.cz Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- include/sound/hdaudio.h | 2 +- sound/hda/hdac_stream.c | 6 +++++- sound/pci/hda/hda_controller.c | 3 +-- 3 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index 7e39d486374a6..b098ceadbe74b 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -590,7 +590,7 @@ void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set, void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, unsigned int streams); void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, - unsigned int streams); + unsigned int streams, bool start); int snd_hdac_get_stream_stripe_ctl(struct hdac_bus *bus, struct snd_pcm_substream *substream);
diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index b53de020309f2..0411a8fe9d6f1 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -664,7 +664,7 @@ static void azx_timecounter_init(struct hdac_stream *azx_dev, * updated accordingly, too. */ void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, - unsigned int streams) + unsigned int streams, bool start) { struct hdac_bus *bus = azx_dev->bus; struct snd_pcm_runtime *runtime = azx_dev->substream->runtime; @@ -672,6 +672,9 @@ void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, bool inited = false; u64 cycle_last = 0;
+ if (!start) + goto skip; + list_for_each_entry(s, &bus->stream_list, list) { if ((streams & (1 << s->index))) { azx_timecounter_init(s, inited, cycle_last); @@ -682,6 +685,7 @@ void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, } }
+skip: snd_pcm_gettime(runtime, &runtime->trigger_tstamp); runtime->trigger_tstamp_latched = true; } diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index 5d86e5a9c814a..f3330b7e0fcfc 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -275,8 +275,7 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) spin_lock(&bus->reg_lock); /* reset SYNC bits */ snd_hdac_stream_sync_trigger(hstr, false, sbits, sync_reg); - if (start) - snd_hdac_stream_timecounter_init(hstr, sbits); + snd_hdac_stream_timecounter_init(hstr, sbits, start); spin_unlock(&bus->reg_lock); return 0; }