On (Thu) 29 Dec 2011 [15:32:14], Christian Borntraeger wrote:
> > port->throttled never becomes true for qemu.
>
> Huh? What did I miss below?
>
> if (ret == -EAGAIN || (ret >= 0 && ret < buf_size)) {
> virtio_serial_throttle_port(port, true);
Ah; I see what's happening. pty_chr_write() returns 0 if a client
isn't yet connected.
This is different from the buggy tcp_chr_write() code, which just
returns 'len', i.e. a successful write. And since I've only tested
with tcp/unix sockets, I couldn't see why throttling could get
enabled.
Amit
