diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-12-05 23:20:17 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-12-05 23:20:17 +0000 |
| commit | 742eaa6a6e356a16788ce6530271de89bc4f8fb5 (patch) | |
| tree | 12fc040daab06ac796c61c1d92bfad9bb054d1c1 /drivers/usb/host/ehci-sched.c | |
| parent | ba8bb18a03f8c7508565c385576a5431a4ad804a (diff) | |
| parent | ae72fd588a2b302222769b44775912b83f0785eb (diff) | |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
Conflicts:
arch/arm/common/gic.c
arch/arm/plat-omap/include/plat/common.h
Diffstat (limited to 'drivers/usb/host/ehci-sched.c')
| -rw-r--r-- | drivers/usb/host/ehci-sched.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index 2e829fae6482..56a32033adb3 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1479,10 +1479,15 @@ iso_stream_schedule ( /* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */ - /* find a uframe slot with enough bandwidth */ - next = start + period; - for (; start < next; start++) { - + /* 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--; /* check schedule: enough space? */ if (stream->highspeed) { if (itd_slot_ok(ehci, mod, start, @@ -1495,7 +1500,7 @@ iso_stream_schedule ( start, sched, period)) break; } - } + } while (start > next); /* no room in the schedule */ if (start == next) { |