[fprint] 4000b image error

[Timo Teras]

On Fri, 9 Nov 2012 17:08:16 +0300 Vasily Khoruzhick
<anarsoul at gmail.com> wrote:

> That could be an alignment issue, could you guys try attached patch?
> At least it should not break anything.

It should not be. The structure is aligned properly - though adding the
packed attribute is probably a good idea.

The length mismatch does not come from the structure size.

The USB data transfer is always short (less than requested) due to how
the device works. And in this case the USB stack returns actually one
more byte than what the device sent. So it really sounds like USB stack
issue (kernel or libusb) that triggers on the target hardware only.

- Timo