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1.   Can't mount cdrom, connected on Adaptec 1542CF with Kernel 2.4.(3-5)

2. Description
On Kernel 2.2.(3-5) with aha1542 as second SCSI-Controller
mount -t iso9660 -o ro /dev/scd1 /cdrom gives the following Message:

mount: wrong fs type, bad option, bad superblock on /dev/sdc1
or too many mounted file systems

But I can burn CDROM and read Images from CDROM,
mean copy Iso9660- and Audio-CDs are ok.

When I switch back to Kernel 2.2.19 there is no Mount-Problem.
There is no mount Problem with aic7xxx, too.
3. Keywords
Adaptec 1542CF, CDROM, mount, iso9660, CD, CD-R, aha1542
4. Kernel version (at the moment)
Linux version 2.4.4 (root@abyss)
(gcc version 2.95.2 19991024 (release)) #3 Fre Mai 25 13:31:31 CEST 2001
5. Output (no oops, but /var/log/messages)
Jun 4 11:24:41 abyss kernel: sr: ran out of mem for scatter pad
Jun 4 11:24:41 abyss kernel: I/O error: dev 0b:01, sector 64
Jun 4 11:24:41 abyss kernel: isofs_read_super: bread failed, dev=0b:01,
iso_blknum=16, block=32
6. mount -t iso9660 -o ro /dev/scd1 /cdrom/
7. Environment
7.1 Linux abyss 2.4.4 #3 Fre Mai 25 13:31:31 CEST 2001 i586 unknown
Gnu C 2.95.2
Gnu make 3.78.1
binutils 2.9.5.0.24
util-linux 2.10m
mount 2.10m
modutils 2.4.5
e2fsprogs 1.18
PPP 2.4.0
isdn4k-utils 3.1beta6s
Linux C Library x 1 root root 4070406 Jul 30 2000 /lib/libc.so.6
Dynamic linker (ldd) 2.1.3
Procps 2.0.6
Net-tools 1.54
Kbd 0.99
Sh-utils 2.0
Modules Loaded hisax isdn ppp_async ppp_generic sr_mod cdrom
aha1542 videodev printer usb-ohci nfsd lockd
sunrpc serial ne isa-pnp 8390
7.2 Processor information
processor : 0
vendor_id : AuthenticAMD
cpu family : 5
model : 6
model name : AMD-K6tm w/ multimedia extensions
stepping : 2
cpu MHz : 233.293
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8 mmx
bogomips : 465.30
7.3 Module information
hisax 148304 2
isdn 102256 3 [hisax]
ppp_async 6224 0 (autoclean)
ppp_generic 13120 0 (autoclean) [ppp_async]
sr_mod 12848 0 (autoclean)
cdrom 26912 0 (autoclean) [sr_mod]
aha1542 10208 0
videodev 4640 0 (unused)
printer 4912 0 (unused)
usb-ohci 16640 0 (unused)
nfsd 43920 4 (autoclean)
lockd 37680 1 (autoclean) [nfsd]
sunrpc 58912 1 (autoclean) [nfsd lockd]
serial 43152 1 (autoclean)
ne 6752 1
isa-pnp 27696 0 [aha1542 serial ne]
8390 6192 0 [ne]
7.4 Loaded driver and hardware information
/proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0220-022f : soundblaster
02f8-02ff : serial(auto)
0300-031f : eth0
0330-0333 : aha1542
03c0-03df : vga+
03f8-03ff : serial(auto)
0cf8-0cff : PCI conf1
ea00-eaff : Adaptec AIC-7881U
ee80-ee9f : AVM Audiovisuelles MKTG & Computer System GmbH A1 ISDN [Fritz]
ee80-ee9f : avm PCI
/proc/iomem
00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000c8000-000cc7ff : Extension ROM
000dc000-000dffff : Extension ROM
000f0000-000fffff : System ROM
00100000-0bffffff : System RAM
00100000-001e7cdf : Kernel code
001e7ce0-0024589f : Kernel data
ed000000-edffffff : Matrox Graphics, Inc. MGA G200
ef000000-ef7fffff : Matrox Graphics, Inc. MGA G200
efff9000-efff9fff : Adaptec AIC-7881U
efff9000-efff9fff : aic7xxx
efffafe0-efffafff : AVM Audiovisuelles MKTG & Computer System GmbH A1
ISDN [Fritz]
efffb000-efffbfff : Acer Laboratories Inc. [ALi] M5237 USB
efffb000-efffbfff : usb-ohci
efffc000-efffffff : Matrox Graphics, Inc. MGA G200
fec00000-fec00fff : reserved
fee00000-fee00fff : reserved
fffe0000-ffffffff : reserved
7.5 PCI information
lspci -vvv
00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1531 [Aladdin IV]
(rev b2)
- Subsystem: Acer Laboratories Inc. [ALi] M1531 [Aladdin IV]
- Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
- Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort-
<MAbort+ >SERR- <PERR-
- Latency: 32

00:02.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge
[Aladdin IV] (rev b4)
- Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
- Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort+ <MAbort+ >SERR- <PERR-
Latency: 0

00:03.0 SCSI storage controller: Adaptec AIC-7881U
- Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
- Latency: 64 (2000ns min, 2000ns max), cache line size 08
- Interrupt: pin A routed to IRQ 15
- Region 0: I/O ports at ea00 [disabled] [size=256]
- Region 1: Memory at efff9000 (32-bit, non-prefetchable) [size=4K]
- Expansion ROM at effd0000 [disabled] [size=64K]

00:05.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200
(rev 01) (prog-if 00 [VGA])
- Subsystem: Matrox Graphics, Inc. Millennium G200 SD
- Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
- Latency: 64 (4000ns min, 8000ns max), cache line size 08
- Interrupt: pin A routed to IRQ 0
- Region 0: Memory at ed000000 (32-bit, prefetchable) [size=16M]
- Region 1: Memory at efffc000 (32-bit, non-prefetchable) [size=16K]
- Region 2: Memory at ef000000 (32-bit, non-prefetchable) [size=8M]
- Expansion ROM at effe0000 [disabled] [size=64K]
- Capabilities: [dc] Power Management version 1
- Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,
D3cold-)
- Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:06.0 Network controller: AVM Audiovisuelles MKTG & Computer System
GmbH A1 ISDN [Fritz] (rev 02)
- Subsystem: AVM Audiovisuelles MKTG & Computer System GmbH FRITZ!Card
ISDN Controller
- Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
- Interrupt: pin A routed to IRQ 9
- Region 0: Memory at efffafe0 (32-bit, non-prefetchable) [size=32]
- Region 1: I/O ports at ee80 [size=32]

00:0f.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03)
(prog-if 10 [OHCI])
- Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
- Latency: 64, cache line size 08
- Interrupt: pin A routed to IRQ 10
- Region 0: Memory at efffb000 (32-bit, non-prefetchable) [size=4K]
7.6 SCSI information
/proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: DDRS-34560W Rev: S92A
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: IBM Model: DORS-31080 Rev: WA6A
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: DEC Model: RZ26L (C) DEC Rev: 442D
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 06 Lun: 00
Vendor: TOSHIBA Model: CD-ROM XM-3701TA Rev: 0236
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 08 Lun: 00
Vendor: IBM Model: DCAS-34330W Rev: S65A
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 09 Lun: 00
Vendor: Model: DFRSS4W Rev: 4B4B
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 01 Lun: 00
Vendor: TEAC Model: CD-ROM CD-532S Rev: 1.0A
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 02 Lun: 00
Vendor: HP Model: CD-Writer+ 9200 Rev: 1.0c
Type: CD-ROM ANSI SCSI revision: 04
Host: scsi1 Channel: 00 Id: 04 Lun: 00
Vendor: HP Model: HP35480A Rev: T503
Type: Sequential-Access ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 05 Lun: 00
Vendor: EXABYTE Model: EXB-8200 Rev: 2644
Type: Sequential-Access ANSI SCSI revision: 01
Host: scsi1 Channel: 00 Id: 06 Lun: 00
Vendor: SCANNER Model: Rev: 1.06
Type: Scanner ANSI SCSI revision: 01 CCS
7.7 Other notes
There are 2 SCSI-Controller running on the System:

the first: aic7xxx (Adaptec 2940UW)
Note: The cdrom on aic7xxx can be mounted, without any problem

the second: aha1542 (Adaptec 1542CF)
Note: No cdrom can be mounted, but I can read Cdrom-Images with cdrecord.
Tapes and Scanner running fine

Missing in REPORTING-BUGS
/proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 196005888 193130496 2875392 0 11296768 59224064
Swap: 139821056 1134592 138686464
MemTotal: 191412 kB
MemFree: 2808 kB
MemShared: 0 kB
Buffers: 11032 kB
Cached: 57836 kB
Active: 14024 kB
Inact_dirty: 52048 kB
Inact_clean: 2796 kB
Inact_target: 16 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 191412 kB
LowFree: 2808 kB
SwapTotal: 136544 kB
SwapFree: 135436 kB

X. Sorry for my bad english, I'm working on it. Thank you

Greetings from Germany

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