(dup) serial port: LSR safety check engaged

[Bruce Sass <bsass@freenet.edmonton.ab.ca>]

Hi,

Anybody know what an "LSR safety check" is, and how to disengage it?

I've been getting this message...
	ttyS3: LSR safety check engaged!

...when I do "pon" or "minicom" (which also says /dev/ttyS3 doesn't
exist), the modem doesn't dial. 

ttyS3 does exist (an isapnp card),
the card's config is good (worked in the past),
the permissions are correct (root dialout crw-rw----),
and the user is a member of dialout.

It doesn't seem to matter if setserial knows about the card or not;
restarting setserial gets me:
	/dev/ttyS0 at 0x03f8 (irq = 4) is a 16450
	/dev/ttyS1 at 0x02f8 (irq = 3) is a 16550A
	ttyS3: LSR safety check engaged!
	ttyS3: LSR safety check engaged!
	ttyS3: LSR safety check engaged!
	/dev/ttyS3 at 0x02e8 (irq = 3) is a 16550A

(ttyS0 and ttyS1 are not used)

I'm running testing/unstable (current as of last thursday),
and a 2.4.3 kernel. 

I can't find anything in the docs for setserial, pppd, or the kernel
and aside from being able to check my mail (from an 8M 486-25, running
little more than a Debian 2.0 base system), I'm pretty much offline :(


- Bruce