Hi Matthieu,
I can confirm this patch fixes my problem, after testing haven't seen any problems yet.
Thx !
--
Sander
Saturday, November 26, 2011, 11:13:04 PM, you wrote:
> Hi,
> could you try the following patch ?
> It seems there is a flow in the error condition.
> Matthieu
> diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
> index 56a3203..464b451 100644
> --- a/drivers/usb/host/ehci-sched.c
> +++ b/drivers/usb/host/ehci-sched.c
> @@ -1475,6 +1475,7 @@ iso_stream_schedule (
> * jump until after the queue is primed.
> */
> else {
> + int done = 0;
> start = SCHEDULE_SLOP + (now & ~0x07);
>
> /* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */
> @@ -1491,19 +1492,23 @@ iso_stream_schedule (
> /* check schedule: enough space? */
> if (stream->highspeed) {
> if (itd_slot_ok(ehci, mod, start,
> - stream->usecs, period))
> + stream->usecs, period)) {
> + done = 1;
> break;
> + }
> } else {
> if ((start % 8) >= 6)
> continue;
> if (sitd_slot_ok(ehci, mod, stream,
> - start, sched, period))
> + start, sched, period)) {
> + done = 1;
> break;
> + }
> }
> } while (start > next);
>
> /* no room in the schedule */
> - if (start == next) {
> + if (!done) {
> ehci_dbg(ehci, "iso resched full %p (now %d max %d)\n",
> urb, now, now + mod);
> status = -ENOSPC;
--
Best regards,
Sander mailto:linux@xxxxxxxxxxxxxx
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