I'm working on a small app that talks to a device with a FTDI USB to 232 chip in it. ucom and uftdi seem to detect it just fine. But calls to read() hang and I'm getting messages like "putc to a clist with no reserved cblocks" in my kernel logs. Any idea what this is?
In a previous post (subject: ucom and sio) I asked about a similar problem with read() hanging on prolific chips. The fix involved ignoring modem control lines with CLOCAL, but that doesn't appear to do the trick here. Oddly, the exact same software/hardware works fine on my powerbook. What am I missing? I can send code if its needed.
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