ttySx hardware handshake blocks

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#1
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Hi all,

I am currently faced with a problem where the ttySx hardware handshake blocks login to the board via telnet :shock:

My configuration:
STK1000+1002, kernel 2.6.30, buildroot 2.3.0.

I'm using ttyS0 for transfering data, the console is on ttyS2.
Recently I have enabled hardware handshake for ttyS0.
The hw handshake is working well. But I have found that when the transmission from the STK1000 to the receiver is blocked by the receiver, it is not possible anymore to login to the board via telnet.

I cannot see a relationship between the two effects, but hopefully somebody can help

Gerhard

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Update:

with hardware handshake enabled and CTS line inactive,

ls > /dev/ttyS0

seems to block the whole machine.
Active telnet sessions do not respond and even the console is dead ...

Gerhard