1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 4c972b57c7c3..ccc7300baa6d 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -700,6 +700,7 @@ iso_stream_init (
 
         } else {
                 u32             addr;
+                int             think_time;
 
                 addr = dev->ttport << 24;
                 if (!ehci_is_TDI(ehci)
@@ -709,6 +710,9 @@ iso_stream_init (
                 addr |= epnum << 8;
                 addr |= dev->devnum;
                 stream->usecs = HS_USECS_ISO (maxp);
+                think_time = dev->tt ? dev->tt->think_time : 0;
+                stream->tt_usecs = NS_TO_US (think_time + usb_calc_bus_time (
+                                dev->speed, is_input, 1, maxp));
                 if (is_input) {
                         u32     tmp;