Messages in this thread | | | Subject | Re: 8250 serial console fixes -- issue | From | Krzysztof Halasa <> | Date | Sun, 05 Feb 2006 22:26:06 +0100 |
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Hi,
Glen Turner <glen.turner@aarnet.edu.au> writes:
> The serial console still should not write into an unasserted > DSR or DCD since that will hang up on incoming calls. But > they's a totally different, non-security issue.
Could be a security issue if the modem gets reconfigured.
> I'm also unsure of the robustness equipment in the face > of Russell's suggestion. The suggestion implies that the > kernel will write strings when CTS is unasserted. There > is some allowance for that in receivers that are configured > for RTS/CTS flow control, but it that allowance being overly > stressed? And does it matter if the modem or the receiver > drops some characters? Is there popular equipment for which > this is a pathological case?
Actually I think you can't currently connect a Hayes modem directly to a serial console, CRTSCTS or no flow control.
With terminal server it may work (especially Linux-based or similar), for example, with "screen".
> I would probably prefer two flags -- 'r' meaning flow control > (CTS) and a new option, say 's', meaning modem status (DSR,DCD).
Would make sense I think.
>> BTW I think you know all of this very well for years. > > I don't know what you were thinking when you wrote this. But > it is stupid. It's one thing to be technically wrong -- all > that is required to fix that is some patience on both sides. > And Russell has been very patient with me, which I appreciate. > > It's totally another thing entirely to be insulting. What > do you now think are the chances of people working together > harmoniously to have the open issues satisfactorily resolved?
I'm not exactly sure what do you mean. First I thought he was overworked or something like that but now I wonder if I should check it with an English teacher nearby?
I just really thought he knows modem control lines details and how Hayes modems behave etc. from BBS era.
What exactly is the "insult" here? -- Krzysztof Halasa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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