usb/138659: uftdi driver broken in RELENG_8/CURRENT
Hans Petter Selasky
hselasky at c2i.net
Tue Sep 22 15:35:23 UTC 2009
On Tuesday 22 September 2009 17:21:28 Pierre-Luc Drouin wrote:
> >> Thanks!
> >
> > It indicates that your device is not sending any data.
> >
> > --HPS
>
> So does it mean that the write statement (a status request) is not
> transmitted to the device either?
No, the "xxx_get()" message means that the data you write is sent and
transmitted.
BTW: I have a FTDI adapter here, and it works fine with loopback when the
baudrate is set correctly.
> Because this write statement should be
> followed by data sent from the device and it effectively does on Linux.
> And about SIGIO, shouldn't this signal be generated only when there is
> data available to read? Why is it generated in asynchronous mode and
> then the read statement returns EINTR?
Ed has to answer these questions. This stuff is not handled in the USB stack
for FTDI devices.
--HPS
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