diff options
| -rw-r--r-- | hw/usb/hcd-ohci.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c index d225ebbbe3..ff5658e25e 100644 --- a/hw/usb/hcd-ohci.c +++ b/hw/usb/hcd-ohci.c @@ -1241,11 +1241,16 @@ static int ohci_service_ed_list(OHCIState *ohci, uint32_t head, int completion) return active; } -/* Generate a SOF event, and set a timer for EOF */ -static void ohci_sof(OHCIState *ohci) +/* 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_eof_timer(ohci); ohci_set_interrupt(ohci, OHCI_INTR_SF); } @@ -1353,7 +1358,12 @@ static int ohci_bus_start(OHCIState *ohci) trace_usb_ohci_start(ohci->name); - ohci_sof(ohci); + /* Delay the first SOF event by one frame time as + * linux driver is not ready to receive it and + * can meet some race conditions + */ + + ohci_eof_timer(ohci); return 1; } |