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-rw-r--r--sound/usb/usbaudio.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index b6d886373bb0..8ebc1adb5ed9 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1878,6 +1878,9 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre
}
/* set the period time minimum 1ms */
+ /* FIXME: high-speed mode allows 125us minimum period, but many parts
+ * in the current code assume the 1ms period.
+ */
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
1000 * MIN_PACKS_URB,
/*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);