Merge branch 'topic/usb-audio' into for-linus

* topic/usb-audio:
  ALSA: usb-audio - Fix types taken in min()
  sound: usb-audio: do not make URBs longer than sync packet interval
  sound: usb-audio: add MIDI drain callback
  sound: usb-audio: use multiple output URBs
  sound: usb-audio: use multiple input URBs
  sound: usb-audio: Xonar U1 digital output support

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 3a53c79f48b8..8db0374e10d5 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1083,6 +1083,8 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri
         } else
                 urb_packs = 1;
         urb_packs *= packs_per_ms;
+        if (subs->syncpipe)
+                urb_packs = min(urb_packs, 1U << subs->syncinterval);
 
         /* decide how many packets to be used */
         if (is_playback) {