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Revert "USB: EHCI: fix HUB TT scheduling issue with iso transfer"

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This reverts commit f0cc710a6d.

Cc: Matthieu Castet <matthieu.castet@parrot.com>
Cc: Thomas Poussevin <thomas.poussevin@parrot.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
2011-11-29 07:40:10 +09:00
parent e6c2efafa8
commit 4a8dec4b97
1 changed files with 5 additions and 10 deletions
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15
drivers/usb/host/ehci-sched.c
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@@ -1480,15 +1480,10 @@ iso_stream_schedule (
/* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */
/* find a uframe slot with enough bandwidth.
* Early uframes are more precious because full-speed
* iso IN transfers can't use late uframes,
* and therefore they should be allocated last.
*/
next = start;
start += period;
do {
start--;
/* find a uframe slot with enough bandwidth */
next = start + period;
for (; start < next; start++) {
/* check schedule: enough space? */
if (stream->highspeed) {
if (itd_slot_ok(ehci, mod, start,
@@ -1501,7 +1496,7 @@ iso_stream_schedule (
start, sched, period))
break;
}
} while (start > next);
}
/* no room in the schedule */
if (start == next) {