localhost kernel : USBF : 157.944 AppleEHCIIsochTransferDescriptor : :
UpdateFrameList - bad status word 0 gives status 0xe00002e7
If you look in IOReturn.h you'll find that that "error" is:
#define kIOReturnUnderrun iokit_common_err(0x2e7) // data underrun
That's what you get if the packet the device sent is smaller than the
packet the host is sending. This is not necessarily an error. If it
is an error, it is a disagreement between your device and your driver.
There are no steps necessary to recover from the error, but be sure
to note the actual data transfer size. If the lack of data is a
problem for you, you'd need to work out the disagreement between the
device and the driver.
--
Barry Twycross
email@hidden
---
USB, it's not a Dyslexic BUS. (Thanks to TC.)
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