diff options
| author | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-29 07:38:25 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-29 07:38:25 +0900 |
| commit | eb89536db55afc262a59e493a76b521c5c7ad89e (patch) | |
| tree | 1560c4eb9385c000f3fb96d757fb156a5bb65481 | |
| parent | 7a576d2dcd5807a7310032b380442eeba8c1c293 (diff) | |
Revert "USB: EHCI: fix HUB TT scheduling issue with iso transfer"
This reverts commit 317451c11fefcb0e05383f0a0080bb7f5445cfcf.
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>
| -rw-r--r-- | drivers/usb/host/ehci-sched.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index fb2d0c2f0670..063c630d2467 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1483,15 +1483,10 @@ 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, @@ -1504,7 +1499,7 @@ iso_stream_schedule ( start, sched, period)) break; } - } while (start > next); + } /* no room in the schedule */ if (start == next) { |