JFFS2/mtdsuper modprobe "unknown symbol" in 2.6.23-rc1

[Erez Zadok]

I'm getting an error modprobing jffs2 due to mtdsuper failing to insmod:

# modprobe jffs2
WARNING: Error inserting mtdsuper
(/lib/modules/2.6.23-rc1/kernel/drivers/mtd/mtdsuper.ko):
Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting jffs2
(/lib/modules/2.6.23-rc1/kernel/fs/jffs2/jffs2.ko): Unknown
symbol in module, or unknown parameter (see dmesg)

# dmesg | tail
mtdsuper: Unknown symbol get_mtd_device
mtdsuper: Unknown symbol put_mtd_device
jffs2: Unknown symbol get_sb_mtd
jffs2: Unknown symbol kill_mtd_super

My relevant .config is:

CONFIG_MTD=m
CONFIG_MTD_BLKDEVS=m
CONFIG_MTD_BLOCK=m
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
CONFIG_MTD_BLOCK2MTD=m
CONFIG_JFFS2_FS=m
CONFIG_JFFS2_FS_DEBUG=0
CONFIG_JFFS2_FS_WRITEBUFFER=y
CONFIG_JFFS2_SUMMARY=y
CONFIG_JFFS2_FS_XATTR=y
CONFIG_JFFS2_FS_POSIX_ACL=y
CONFIG_JFFS2_FS_SECURITY=y
CONFIG_JFFS2_COMPRESSION_OPTIONS=y
CONFIG_JFFS2_ZLIB=y
CONFIG_JFFS2_RTIME=y
CONFIG_JFFS2_CMODE_PRIORITY=y

A "quick hack" around this which I found is to add

  MODULE_LICENSE("GPL");

to the end of drivers/mtd/mtdsuper.c, but that doesn't sound like the right
fix.

Does anyone know what am I missing?

Thanks,
Erez.
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