usb/138659: uftdi driver broken in RELENG_8/CURRENT

[Pierre-Luc Drouin]

Ed Schouten wrote:
> Hello Pierre-Luc,
>
> * Pierre-Luc Drouin <pldrouin at pldrouin.net> wrote:
>   
>> Here is what I get from pstat when I run my executable:
>>
>> while ( 1 )
>> while? pstat -t ttyU0 | grep ttyU0
>> while? sleep 1
>> while? end
>>      LINE   INQ  CAN  LIN  LOW  OUTQ  USE  LOW   COL  SESS  PGID STATE
>>     ttyU0     0    0    0    0     0    0    0     4     0     0 ICl
>>     
> <snip>
>   
>>     ttyU0  1920    0    0  192  1984    0  199     6     0     0 ICOil
>>     
>
> That all makes sense. Just let me know what it looks like when things go
> sour. If it still displays the above mentioned lines, then I suspect it
> to be a more complex problem...
>
>   
Well in my case (not to be confused with the starter of this thread), I 
simply cannot read any data. It hangs forever at the first read 
statement on FreeBSD in synchronous mode, or I get EINTR if I try 
reading in ASYNC mode after SIGIO is sent, independently of the number 
of bytes I try reading. All these tests run smoothly on Linux.

Pierre-Luc Drouin