diff options
Diffstat (limited to 'hw/usb-ehci.c')
| -rw-r--r-- | hw/usb-ehci.c | 30 |
1 files changed, 1 insertions, 29 deletions
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c index b95773f5b1..afc8ccf458 100644 --- a/hw/usb-ehci.c +++ b/hw/usb-ehci.c @@ -1471,36 +1471,10 @@ static int ehci_process_itd(EHCIState *ehci, } qemu_sglist_destroy(&ehci->isgl); -#if 0 - /* In isoch, there is no facility to indicate a NAK so let's - * instead just complete a zero-byte transaction. Setting - * DBERR seems too draconian. - */ - - if (ret == USB_RET_NAK) { - if (ehci->isoch_pause > 0) { - DPRINTF("ISOCH: received a NAK but paused so returning\n"); - ehci->isoch_pause--; - return 0; - } else if (ehci->isoch_pause == -1) { - DPRINTF("ISOCH: recv NAK & isoch pause inactive, setting\n"); - // Pause frindex for up to 50 msec waiting for data from - // remote - ehci->isoch_pause = 50; - return 0; - } else { - DPRINTF("ISOCH: isoch pause timeout! return 0\n"); - ret = 0; - } - } else { - DPRINTF("ISOCH: received ACK, clearing pause\n"); - ehci->isoch_pause = -1; - } -#else if (ret == USB_RET_NAK) { + /* no data for us, so do a zero-length transfer */ ret = 0; } -#endif if (ret >= 0) { if (!dir) { @@ -2389,8 +2363,6 @@ static int usb_ehci_initfn(PCIDevice *dev) memory_region_init_io(&s->mem, &ehci_mem_ops, s, "ehci", MMIO_SIZE); pci_register_bar(&s->dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mem); - fprintf(stderr, "*** EHCI support is under development ***\n"); - return 0; } |