Cannot mount my NAND device with JFFS2

[Ken Offer]

Hi all,

I can erase and test my smart media card NAND driver just fine 
(i.e. eraseall seems to work, nandtest works, mtd0 and mtd1 show 
up in /proc/mtd).  So far so good.  However, when I try to mount 
the device with jffs2 I get:

 > mount -v -t jffs2 /dev/mtdblock1 /mnt/jffs
mount: wrong fs type, bad option, bad superblock on /dev/mtdblock1,
        or too many mounted file systems

I have:

(a) applied the 
"ftp://ftp.??.kernel.org/pub/linux/kernel/people/dwmw2/shared-
zlib/linux-2.4.19-pre10-shared-zlib.bz2" patch to a 2.4.19 
kernel,
(b) copied the latest and greatest cvs mtd/jffs2 sources into my kernel,
(c) made the appropriate changes to "file.c" for Page_uptodate,
(d) made the change for "CONFIG_JFFS2_FS_NAND" to "fs/Config.in",
(e) made a change to "include/linux/mtd/compatmac.h" to define 
"set_user_nice" (isn't defined for 2.4.19).

My driver is based on the autcpu12 driver in the nand sources.  
I have noticed that there is a "autcpu12-nvram" map driver to 
perform NVRAM mapping.  Is such a mapping device REQUIRED for 
JFFS2 support???  Or is it just for mapping the device to 
address space for other purposes?  The documentation is not 
clear (what's new...)

Got any ideas?

+-----------------------------------------------------------+
|  Ken Offer        koffer at arlut.utexas.edu         ARL:UT  |
|  Office: 512-835-3859                  Fax: 512-835-3259  |
+-----------------------------------------------------------+