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SubjectRe: 2.6.10-mm1
Date
I was looking to compare RT latency between this kernel and the latest from
Ingo and I had the following warnings / errors building 2.6.10-mm1:

[no apparent compile / link errors]
*** Warning: "snd_ac97_restore_iec958" [sound/pci/ac97/snd-ac97-codec.ko]
undefined!
*** Warning: "snd_ac97_restore_status" [sound/pci/ac97/snd-ac97-codec.ko]
undefined!
*** Warning: "del_mtd_partitions" [drivers/mtd/maps/scx200_docflash.ko]
undefined!
*** Warning: "add_mtd_partitions" [drivers/mtd/maps/scx200_docflash.ko]
undefined!
...
if [ -r System.map ]; then /sbin/depmod -ae -F System.map -b
/var/tmp/kernel-2.6.10mm1-root -r 2.6.10-mm1; fi
WARNING: /var/tmp/kernel-2.6.10
mm1-root/lib/modules/2.6.10-mm1/kernel/sound/pci/ac97/snd-ac97-codec.ko
needs unknown sy
mbol snd_ac97_restore_status
WARNING: /var/tmp/kernel-2.6.10
mm1-root/lib/modules/2.6.10-mm1/kernel/sound/pci/ac97/snd-ac97-codec.ko
needs unknown sy
mbol snd_ac97_restore_iec958
WARNING: /var/tmp/kernel-2.6.10
mm1-root/lib/modules/2.6.10-mm1/kernel/drivers/mtd/maps/scx200_docflash.ko
needs unknown
symbol del_mtd_partitions
WARNING: /var/tmp/kernel-2.6.10
mm1-root/lib/modules/2.6.10-mm1/kernel/drivers/mtd/maps/scx200_docflash.ko
needs unknown
symbol add_mtd_partitions
...

The following messages after rebooting...

...
Jan 3 16:42:00 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_status
Jan 3 16:42:00 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_iec958
Jan 3 16:42:00 dws77 modprobe: WARNING: Error inserting snd_ac97_codec
(/lib/modules/2.6.10-mm1/kernel/sound/pci/ac97/
snd-ac97-codec.ko): Unknown symbol in module, or unknown parameter (see
dmesg)
Jan 3 16:42:01 dws77 modprobe: FATAL: Error inserting snd_ens1371
(/lib/modules/2.6.10-mm1/kernel/sound/pci/snd-ens137
1.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_mixer
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_bus
Jan 3 16:42:01 dws77 modprobe: WARNING: Error inserting snd_ac97_codec
(/lib/modules/2.6.10-mm1/kernel/sound/pci/ac97/
snd-ac97-codec.ko): Unknown symbol in module, or unknown parameter (see
dmesg)
Jan 3 16:42:01 dws77 modprobe: FATAL: Error inserting snd_ens1371
(/lib/modules/2.6.10-mm1/kernel/sound/pci/snd-ens137
1.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Jan 3 16:42:01 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_status
Jan 3 16:42:01 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_iec958
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_mixer
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_bus
Jan 3 16:42:01 dws77 modprobe: WARNING: Error inserting snd_ac97_codec
(/lib/modules/2.6.10-mm1/kernel/sound/pci/ac97/
snd-ac97-codec.ko): Unknown symbol in module, or unknown parameter (see
dmesg)
Jan 3 16:42:01 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_status
Jan 3 16:42:01 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_iec958
Jan 3 16:42:01 dws77 modprobe: FATAL: Error inserting snd_ens1371
(/lib/modules/2.6.10-mm1/kernel/sound/pci/snd-ens137
1.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_mixer
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_bus
Jan 3 16:42:01 dws77 modprobe: WARNING: Error inserting snd_ac97_codec
(/lib/modules/2.6.10-mm1/kernel/sound/pci/ac97/
snd-ac97-codec.ko): Unknown symbol in module, or unknown parameter (see
dmesg)
Jan 3 16:42:01 dws77 modprobe: FATAL: Error inserting snd_ens1371
(/lib/modules/2.6.10-mm1/kernel/sound/pci/snd-ens137
1.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Jan 3 16:42:01 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_status
Jan 3 16:42:01 dws77 kernel: snd_ac97_codec: Unknown symbol
snd_ac97_restore_iec958
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_mixer
Jan 3 16:42:01 dws77 kernel: snd_ens1371: Unknown symbol snd_ac97_bus
...

and in dmesg, the following repeated a few times:
snd_ac97_codec: Unknown symbol snd_ac97_restore_status
snd_ac97_codec: Unknown symbol snd_ac97_restore_iec958
snd_ens1371: Unknown symbol snd_ac97_mixer
snd_ens1371: Unknown symbol snd_ac97_bus

At this point, the system fails to work with my sound card.
The .config is basically the same as used previously with
2.6.10-rc3-mm1-V0.7.33-04 (Ingo's realtime patches) without problems.
[though I expected & saw plenty of unused symbols when I did
make mrproper / xconfig for 2.6.10-mm1]

To fix this, should I just add the EXPORT_SYMBOL lines for these symbols
snd_ac97_restore_status snd_ac97_restore_iec958
or is something more needed?

Thanks.
--Mark Johnson <mailto:Mark_H_Johnson@Raytheon.com>

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