From d61000a8b1d99c5155440b727ea32f12a4988120 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 2 Mar 2012 21:27:20 +0100 Subject: usb: add USB_RET_IOERROR We already have USB_RET_NAK, but that means that a device does not want to send/receive right now. But with host / network redirection we can actually have a transaction fail due to some io error, rather then ie the device just not having any data atm. This patch adds a new error code named USB_RET_IOERROR for this, and uses it were appropriate. Notes: -Currently all usb-controllers handle this the same as NODEV, but that may change in the future, OHCI could indicate a CRC error instead for example. -This patch does not touch hw/usb-musb.c, that is because the code in there handles STALL and NAK specially and has a if status < 0 generic catch all for all other errors Signed-off-by: Hans de Goede Signed-off-by: Gerd Hoffmann --- hw/usb-ehci.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'hw/usb-ehci.c') diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c index 825fcc05b3..df742f7f02 100644 --- a/hw/usb-ehci.c +++ b/hw/usb-ehci.c @@ -1299,6 +1299,7 @@ static void ehci_execute_complete(EHCIQueue *q) if (q->usb_status < 0) { switch(q->usb_status) { + case USB_RET_IOERROR: case USB_RET_NODEV: q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR); set_field(&q->qh.token, 0, QTD_TOKEN_CERR); @@ -1471,6 +1472,7 @@ static int ehci_process_itd(EHCIState *ehci, default: fprintf(stderr, "Unexpected iso usb result: %d\n", ret); /* Fall through */ + case USB_RET_IOERROR: case USB_RET_NODEV: /* 3.3.2: XACTERR is only allowed on IN transactions */ if (dir) { -- cgit 1.4.1