kernel update bug?

Hi,

I recently got a C360 to play around with it. After installing an old beta of woody (thats the distribution, I got on my private net), everything seemd fine. The kernel --
Linux version 2.4.9-32 (root@paer) (gcc version 3.0.2 (Debian)) #1 Fri Nov 30 19:36:30 MST 2001 -- worked just fine.

After this, I installed a newer kernel (well, I just copied the kernel, and omitted the modules): --
Linux version 2.4.20-pa18 (bame@dsl2) (gcc version 3.0.3) #1 Fri Dec 27 06:12:20 MST 2002 --
and with this kernel, the machine crashes reproduceable when starting up.

Now the reason: I found, that with kernel 2.4.9, there were 3 serial devices found

/dev/ttyS0 uart 16550A port 0x0000 irq 90 baud_base 454545 spd_normal /dev/ttyS1 uart 16550A port 0x0000 irq 106 baud_base 454545 spd_normal /dev/ttyS2 uart 16550A port 0x0000 irq 170 baud_base 454545 spd_normal

the later kernel finds only the first two of these interfaces, and restarts when restoring the settings of /dev/ttyS2. Later it crashes completely of course. I could fix this behaviour by commenting out the last line in /etc/serial.conf.

Now my question: should kernel 2.4.20 find two or three serial devices on a C360, and why does the kernel crash if setserial tries to configure a (nonexistant?) device?

Berthold

Well, how many serial ports do you have? ;-)

It was a bug up till (i think) a 2.4.17 kernel that we found a ghost serial port. And setserial is a broken piece of crap that will crash the machine if it tries to set serial ports that don't exist.

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