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usb-ehci: Cleanup itd error handling 

All error statuses except for NAK are handled in a switch case, move the
handling of NAK into the same switch case.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-03-02 21:27:18 +01:00 committed by Gerd Hoffmann
parent 553a6a59f6
commit 5eafd438c9
1 changed files with 14 additions and 14 deletions
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28
hw/usb-ehci.c
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@ -1466,20 +1466,7 @@ static int ehci_process_itd(EHCIState *ehci,
}
qemu_sglist_destroy(&ehci->isgl);
if (ret == USB_RET_NAK) {
/* no data for us, so do a zero-length transfer */
ret = 0;
}
if (ret >= 0) {
if (!dir) {
/* OUT */
set_field(&itd->transact[i], len - ret, ITD_XACT_LENGTH);
} else {
/* IN */
set_field(&itd->transact[i], ret, ITD_XACT_LENGTH);
}
} else {
if (ret < 0) {
switch (ret) {
default:
fprintf(stderr, "Unexpected iso usb result: %d\n", ret);
@ -1495,6 +1482,19 @@ static int ehci_process_itd(EHCIState *ehci,
itd->transact[i] |= ITD_XACT_BABBLE;
ehci_record_interrupt(ehci, USBSTS_ERRINT);
break;
case USB_RET_NAK:
/* no data for us, so do a zero-length transfer */
ret = 0;
break;
}
}
if (ret >= 0) {
if (!dir) {
/* OUT */
set_field(&itd->transact[i], len - ret, ITD_XACT_LENGTH);
} else {
/* IN */
set_field(&itd->transact[i], ret, ITD_XACT_LENGTH);
}
}
if (itd->transact[i] & ITD_XACT_IOC) {