2 files changed, 12 insertions, 1 deletions

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index c14fc082864f..ae334b067c13 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -366,7 +366,16 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
         if (xfertype == USB_ENDPOINT_XFER_ISOC) {
                 int     n, len;
 
-                /* FIXME SuperSpeed isoc endpoints have up to 16 bursts */
+                /* SuperSpeed isoc endpoints have up to 16 bursts of up to
+                 * 3 packets each
+                 */
+                if (dev->speed == USB_SPEED_SUPER) {
+                        int     burst = 1 + ep->ss_ep_comp.bMaxBurst;
+                        int     mult = USB_SS_MULT(ep->ss_ep_comp.bmAttributes);
+                        max *= burst;
+                        max *= mult;
+                }
+
                 /* "high bandwidth" mode, 1-3 packets/uframe? */
                 if (dev->speed == USB_SPEED_HIGH) {
                         int     mult = 1 + ((max >> 11) & 0x03);
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 34316ba05f29..b72f305ce6bd 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -585,6 +585,8 @@ struct usb_ss_ep_comp_descriptor {
 #define USB_DT_SS_EP_COMP_SIZE          6
 /* Bits 4:0 of bmAttributes if this is a bulk endpoint */
 #define USB_SS_MAX_STREAMS(p)           (1 << ((p) & 0x1f))
+/* Bits 1:0 of bmAttributes if this is an isoc endpoint */
+#define USB_SS_MULT(p)                  (1 + ((p) & 0x3))
 
 /*-------------------------------------------------------------------------*/