[PATCH] ehci: add tt_usecs

This adds the field tt_usecs to ehci_qh and ehci_iso_stream, and sets it
appropriately when setting them up as periodic endpoints.  It records
the transation translator's think_time (added in last patch) plus the
downstream (i.e. low or full speed) bustime of the transfer associated
with each interrupt or iso frame, as calculated by usb_calc_bus_time.

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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;