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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-03-23 17:18:27 +0100 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-03-23 17:18:27 +0100 |
| commit | 188933ac139a6f8ab06cad369bd0200af947b00d (patch) | |
| tree | c4c107528fcf6b82e32a93b0596e13eea7aa9385 /sound/usb/pcm.c | |
| parent | Input: sun4i-ts - allow controlling filter and sensitivity via DT (diff) | |
| parent | Linux 4.0-rc5 (diff) | |
| download | linux-188933ac139a6f8ab06cad369bd0200af947b00d.tar.xz linux-188933ac139a6f8ab06cad369bd0200af947b00d.zip | |
Merge tag 'v4.0-rc5' into next
Merge with the latest upstream to synchronize Synaptics changes
and bring in new infrastructure pieces.
Conflicts:
drivers/input/mouse/synaptics.c
Diffstat (limited to 'sound/usb/pcm.c')
| -rw-r--r-- | sound/usb/pcm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 0d8aba5fe1a8..b4ef410e5a98 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1464,6 +1464,14 @@ static void prepare_playback_urb(struct snd_usb_substream *subs, subs->last_frame_number = usb_get_current_frame_number(subs->dev); subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ + if (subs->trigger_tstamp_pending_update) { + /* this is the first actual URB submitted, + * update trigger timestamp to reflect actual start time + */ + snd_pcm_gettime(runtime, &runtime->trigger_tstamp); + subs->trigger_tstamp_pending_update = false; + } + spin_unlock_irqrestore(&subs->lock, flags); urb->transfer_buffer_length = bytes; if (period_elapsed) @@ -1550,6 +1558,7 @@ static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substrea switch (cmd) { case SNDRV_PCM_TRIGGER_START: + subs->trigger_tstamp_pending_update = true; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: subs->data_endpoint->prepare_data_urb = prepare_playback_urb; subs->data_endpoint->retire_data_urb = retire_playback_urb; |