jffs2 problem help!

[aa aaa]

During creating jffs2 ,I modified the file /drive/mtd/maps/rpxlite.c just
like the file tqm8xxl.c,I refered the manual DULG.after loading and running
the kernel,display some following message:

init_rpxlite_mtd: chip probing count 0
request_module[cfi_cmdset_0002]: Root fs not mounted
Support for command set 0002 not present
cfi_probe: No supported Vendor Command Set found
init_rpxlite_mtd: chip probing count 1
request_module[cfi_cmdset_0002]: Root fs not mounted
Support for command set 0002 not present
cfi_probe: No supported Vendor Command Set found
init_rpxlite_mtd: chip probing count 2
request_module[cfi_cmdset_0002]: Root fs not mounted
Support for command set 0002 not present
cfi_probe: No supported Vendor Command Set found
init_rpxlite_mtd: chip probing count 3
request_module[cfi_cmdset_0002]: Root fs not mounted
Support for command set 0002 not present
cfi_probe: No supported Vendor Command Set found
RPXLITE: No support flash chips found!

Where is wrong? and when I use the commmand xd ,show no command,why?

thanks !!

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