1 files changed, 12 insertions, 6 deletions

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 8298c462c291..9e38d3d1322a 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -97,7 +97,7 @@ MODULE_PARM_DESC(async_unlink, "Use async unlink mode.");
 
 #define MAX_PACKS       10
 #define MAX_PACKS_HS    (MAX_PACKS * 8) /* in high speed mode */
-#define MAX_URBS        5       /* max. 20ms long packets */
+#define MAX_URBS        8
 #define SYNC_URBS       4       /* always four urbs for sync */
 #define MIN_PACKS_URB   1       /* minimum 1 packet per urb */
 
@@ -920,10 +920,12 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by
         else
                 subs->curpacksize = maxsize;
 
-        if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
+        if (is_playback)
                 urb_packs = nrpacks;
         else
-                urb_packs = (nrpacks * 8) >> subs->datainterval;
+                urb_packs = 1;
+        if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
+                urb_packs = (urb_packs * 8) >> subs->datainterval;
 
         /* allocate a temporary buffer for playback */
         if (is_playback) {
@@ -935,9 +937,13 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by
         }
 
         /* decide how many packets to be used */
-        total_packs = (period_bytes + maxsize - 1) / maxsize;
-        if (total_packs < 2 * MIN_PACKS_URB)
-                total_packs = 2 * MIN_PACKS_URB;
+        if (is_playback) {
+                total_packs = (period_bytes + maxsize - 1) / maxsize;
+                if (total_packs < 2 * MIN_PACKS_URB)
+                        total_packs = 2 * MIN_PACKS_URB;
+        } else {
+                total_packs = MAX_URBS * urb_packs;
+        }
         subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
         if (subs->nurbs > MAX_URBS) {
                 /* too much... */