USB: EHCI: adjust error return code

[cascardo/linux.git] / drivers / usb / host / ehci-sched.c

diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index e113fd7..f9a3327 100644 (file)
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -1581,6 +1581,10 @@ iso_stream_schedule (
        else
                next = (now + 2 + 7) & ~0x07;   /* full frame cache */
 
+       /* If needed, initialize last_iso_frame so that this URB will be seen */
+       if (ehci->isoc_count == 0)
+               ehci->last_iso_frame = now >> 3;
+
        /*
         * Use ehci->last_iso_frame as the base.  There can't be any
         * TDs scheduled for earlier than that.
@@ -1600,11 +1604,11 @@ iso_stream_schedule (
         */
        now2 = (now - base) & (mod - 1);
 
-       /* Is the schedule already full? */
+       /* Is the schedule about to wrap around? */
        if (unlikely(!empty && start < period)) {
-               ehci_dbg(ehci, "iso sched full %p (%u-%u < %u mod %u)\n",
+               ehci_dbg(ehci, "request %p would overflow (%u-%u < %u mod %u)\n",
                                urb, stream->next_uframe, base, period, mod);
-               status = -ENOSPC;
+               status = -EFBIG;
                goto fail;
        }
 
@@ -1671,10 +1675,6 @@ iso_stream_schedule (
        urb->start_frame = start & (mod - 1);
        if (!stream->highspeed)
                urb->start_frame >>= 3;
-
-       /* Make sure scan_isoc() sees these */
-       if (ehci->isoc_count == 0)
-               ehci->last_iso_frame = now >> 3;
        return status;
 
  fail: