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Revision d61000a8

IDd61000a8b1d99c5155440b727ea32f12a4988120

Added by Hans de Goede about 12 years ago

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 <>

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