diff options
| -rw-r--r-- | hw/usb/hcd-ohci.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c index 98da5f0f04..66656a1133 100644 --- a/hw/usb/hcd-ohci.c +++ b/hw/usb/hcd-ohci.c @@ -1253,12 +1253,12 @@ static int ohci_service_ed_list(OHCIState *ohci, uint32_t head, int completion) /* set a timer for EOF */ static void ohci_eof_timer(OHCIState *ohci) { - ohci->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); timer_mod(ohci->eof_timer, ohci->sof_time + usb_frame_time); } /* Set a timer for EOF and generate a SOF event */ static void ohci_sof(OHCIState *ohci) { + ohci->sof_time += usb_frame_time; ohci_eof_timer(ohci); ohci_set_interrupt(ohci, OHCI_INTR_SF); } @@ -1362,6 +1362,7 @@ static int ohci_bus_start(OHCIState *ohci) * can meet some race conditions */ + ohci->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); ohci_eof_timer(ohci); return 1; @@ -1476,6 +1477,9 @@ static uint32_t ohci_get_frame_remaining(OHCIState *ohci) * set already. */ tks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - ohci->sof_time; + if (tks < 0) { + tks = 0; + } /* avoid muldiv if possible */ if (tks >= usb_frame_time) |