[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>
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 4c972b5..ccc7300 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -700,6 +700,7 @@
} else {
u32 addr;
+ int think_time;
addr = dev->ttport << 24;
if (!ehci_is_TDI(ehci)
@@ -709,6 +710,9 @@
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;