[ltp] Linksys ethernet+modem card

[Mark Alford]

Has anyone been able to get the modem to work on a
Linksys combined ethernet + modem card?

I have a Linksys EtherFast 10&100 + 56K PC Card (PCMLM56).
The ethernet part works fine, but the modem does not.

I have a Thinkpad 600E, running RedHat 6.2.
I have made the standard changes to my /etc/pcmcia/config.opts
to get the card to work.

The modem seems to be detected OK (see dmesg etc below)
but when I run minicom and type "AT", nothing is echoed, and
minicom hangs when I exit.

Hoping someone can help

Mark

----------------------------------------------------------------------
Mark Alford                                 email: alford@mit.edu
Room 6-316                                    Tel: 617 253 5846
Center for Theoretical Physics                Fax: 617 253 8674
Massachusetts Institute of Technology
Cambridge, MA 02139
----------------------------------------------------------------------


DIAGNOSTICS:

dmesg gives:
----
eth0: NE2000 Compatible: io 0x300, irq 3, hw_addr 00:E0:98:7F:9C:5F
tty00 at 0x12f8 (irq = 3) is a 16450      
----

The last line tells me (I think) that the modem was detected and
assigned to ttyS0, on interrupt 3:

setserial indicates the same thing:
----
> setserial -g /dev/ttyS*
/dev/ttyS0, UART: 16450, Port: 0x12f8, IRQ: 3
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
/dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3       
----

Interrupt 3 does indeed seem to be assigned correctly, to the
ethernet driver pcnet_cs and serial driver:
> cat /proc/interrupts
           CPU0
  0:     115228          XT-PIC  timer
  1:       3195          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  3:       5920          XT-PIC  pcnet_cs, serial
  8:          1          XT-PIC  rtc
 12:      15069          XT-PIC  PS/2 Mouse
 13:          1          XT-PIC  fpu
 14:      98612          XT-PIC  ide0
 15:       6156          XT-PIC  ide1
NMI:          0

I have tried putting "exclude" lines in /etc/pcmcia/config.opts
to make it use interrupt 10 instead of 3, and the problem persists.

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