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Question serial_cs device not found & null pointer 

Forum: PCMCIA Serial and Modem Issues
Date: 2000, Jan 18
From: Mario Rossi ArmyBot

I'm having problem trying to install a PCMCIA modem...(linux, slackware 7.0)
etc/pcmcia/config reflects what HOWTOs says
device "serial_cs"
  class "serial" module "misc/serial", "serial_cs"

I specified the manfid got with cardctl status, NO way I even tried specifying "serial_cs" as module ( 'cause there's serial_cs.o in pcmcia where is supposed to stay the file if no path is specified)

NO WAY stab says socket 1 is empty ( not true)

I'll add the whole boot log I got a null pointer probiung the second socket ( the modem ) , in fact the eth0 works fine but if you do cardctl status you see : Socket 0: 5V 16-bit card present Function 0: ready Socket 1: Socket 0: 5V 16-bit card present Function 0: ready,write protect <--- ????

Also it seems not to find the module serial_cs ( the same for serial) Could you help me ?

Thanks a lot ArmyBot

Linux version 2.2.13 (root@RsQgC) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #4 Tue Jan 18 18:29:37 CET 2000
Detected 119993660 Hz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 47.82 BogoMIPS
Memory: 62996k/65536k available (1112k kernel code, 412k reserved, 956k data, 60k init)
CPU: Intel Pentium 75 - 200 stepping 0c
Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
Checking 'hlt' instruction... OK.
Intel Pentium with F0 0F bug - workaround enabled.
POSIX conformance testing by UNIFIX
PCI: PCI BIOS revision 2.10 entry at 0xf7019
PCI: Using configuration type 1
PCI: Probing PCI hardware
Linux NET4.0 for Linux 2.2
Based upon Swansea University Computer Society NET3.039
NET4: Unix domain sockets 1.0 for Linux NET4.0.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
Initializing RT netlink socket
Starting kswapd v 1.5 
Detected PS/2 Mouse Port.
Serial driver version 4.27 with HUB-6 MANY_PORTS MULTIPORT SHARE_IRQ enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
pty: 512 Unix98 ptys configured
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.9)
Real Time Clock Driver v1.09
RAM disk driver initialized:  16 RAM disks of 4096K size
loop: registered device at major 7
PCI_IDE: unknown IDE controller on PCI bus 00 device 11, VID=10b9, DID=5219
PCI_IDE: not 100% native mode: will probe irqs later
PCI_IDE: simplex device:  DMA disabled
ide0: PCI_IDE Bus-Master DMA disabled (BIOS)
PCI_IDE: simplex device:  DMA disabled
ide1: PCI_IDE Bus-Master DMA disabled (BIOS)
hda: HITACHI_DK223A-81, ATA DISK drive
hdc: UJDCD8730, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: HITACHI_DK223A-81, 775MB w/128kB Cache, CHS=787/32/63
hdc: ATAPI 8X CD-ROM drive, 128kB Cache
Uniform CDROM driver Revision: 2.56
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
md driver 0.36.6 MAX_MD_DEV=4, MAX_REAL=8
linear personality registered
raid0 personality registered
Partition check:
 hda: hda1 hda2
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 60k freed
Adding Swap: 45356k swap-space (priority -1)
parport0: PC-style at 0x378 [SPP]
lp0: using parport0 (polling).
CSLIP: code copyright 1989 Regents of the University of California
SLIP: version 0.8.4-NET3.019-NEWTTY-MODULAR (dynamic channels, max=256).
SLIP linefill/keepalive option.
PPP: version 2.3.7 (demand dialling)
PPP line discipline registered.
PPP BSD Compression module registered
Soundblaster audio driver Copyright (C) by Hannu Savolainen 1993-1996
SB 3.01 detected OK (220)
ESS chip ES1688 detected
Linux PCMCIA Card Services 3.0.14
  kernel build: 2.2.13 #22 Wed Oct 20 17:32:52 CDT 1999
  options:  [pci] [cardbus]
Intel PCIC probe: 
  TI 1130 PCI-to-CardBus at bus 0 slot 4, mem 0x68000000, 2 sockets
    host opts [0]: [isa irq] [no pci irq] [lat 64/176] [bus 1/5]
    host opts [1]: [isa irq] [no pci irq] [lat 64/176] [bus 6/10]
    ISA irqs (scanned) = 7,9,10,11,12 polling interval = 1000 ms
cs: IO port probe 0x1000-0x17ff: clean.
cs: IO port probe 0x0100-0x04ff: excluding 0x178-0x17f 0x388-0x38f 0x408-0x40f 0x480-0x48f 0x4d0-0x4d7
cs: IO port probe 0x0a00-0x0aff: clean.
cs: memory probe 0xa0000000-0xa0ffffff: clean.
eth0: NE2000 Compatible: io 0x320, irq 9, hw_addr 00:80:C8:87:E5:2C
Unable to handle kernel NULL pointer dereference at virtual address 00000004
current->tss.cr3 = 03d39000, %cr3 = 03d39000
*pde = 00000000
Oops: 0000
CPU:    0
EIP:    0010:[<c484dda8>]
EFLAGS: 00010246
eax: 00000000   ebx: c0071280   ecx: c3c897e0   edx: 00000000
esi: 00000000   edi: c3d7b800   ebp: c3c7dad8   esp: c3c7dad0
ds: 0018   es: 0018   ss: 0018
Process cardmgr (pid: 72, process nr: 9, stackpage=c3c7d000)
Stack: c3c897e0 c3d7b800 c3c7daec c484e6f3 c3c897e0 00000000 00000000 c3c7db6c 
       c486f2e9 0000002d c3c897e0 00000000 c3c89900 00000000 c486f6e0 4d000000 
       c486f6e0 c3c7db00 00000000 00000032 00000032 00000032 49434d43 41432041 
Call Trace: [<c484e6f3>] [<c486f2e9>] [<c486f6e0>] [<c486f6e0>] [<c01acd1b>] [<c486f4ee>] [<c486f450>] 
       [<c484d589>] [<c4857135>] [<c485b9a6>] [<c486d082>] [<c484e8f5>] [<c484e693>] [<c486f14e>] [<c486f6e4>] 
       [<c486f450>] [<c484f8a8>] [<c486f056>] [<c48625f3>] [<c01c1d89>] [<c4862f89>] [<c01b45af>] [<c01b5ccf>] 
       [<c01b705e>] [<c01b82e3>] [<c01bc8e1>] [<c01bbe63>] [<c01bc053>] [<c011c8ff>] [<c011ca2b>] [<c011c2ef>] 
       [<c011c5a1>] [<c012dc45>] [<c0109ef0>] 
Code: 8b 56 04 f6 c2 05 75 0d 66 83 7e 0a 00 74 0d f6 46 0c 05 74 
ISO 9660 Extensions: RRIP_1991A

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