MTD - DOC 2000 freezes on umount

[Mark Richards]

David,

This may now be better referenced under a different subject line perhaps,
but here goes...

I set up a fresh source tree in order that I might enable SYSRQ and build
with the very latest MTD drivers.

1. Got latest via CVS
2. In the mtd/patches/ directory, ran:
  sh patchin.sh /usr/src/linux 
3. Then put in my current .config file into /usr/src/linux (link to my new
source tree) and ran make xconfig.

The following happened:
[root at localhost linux]# make xconfig
rm -f include/asm
( cd include ; ln -sf asm-i386 asm)
make -C scripts kconfig.tk
make[1]: Entering directory `/usr/src/linux-2.4.24.new.mtd/scripts'
cat header.tk >> ./kconfig.tk
./tkparse < ../arch/i386/config.in >> kconfig.tk
drivers/mtd/chips/Config.in: 14: unknown command
make[1]: *** [kconfig.tk] Error 1
make[1]: Leaving directory `/usr/src/linux-2.4.24.new.mtd/scripts'
make: *** [xconfig] Error 2

It appeared that something was mangled by running patchin.  So I created a
new tree and first ran make xconfig, which worked fine, then applied patchin
and then ran make xconfig again.  

Here's the sequence:


[root at localhost linux]# make xconfig
rm -f include/asm
( cd include ; ln -sf asm-i386 asm)
make -C scripts kconfig.tk
make[1]: Entering directory `/usr/src/linux-2.4.24.new.mtd/scripts'
gcc -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -c -o tkparse.o
tkparse.c
gcc -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -c -o tkcond.o
tkcond.c
gcc -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -c -o tkgen.o tkgen.c
gcc -o tkparse tkparse.o tkcond.o tkgen.o
cat header.tk >> ./kconfig.tk
./tkparse < ../arch/i386/config.in >> kconfig.tk
echo "set defaults \"arch/i386/defconfig\"" >> kconfig.tk
echo "set ARCH \"i386\"" >> kconfig.tk
cat tail.tk >> kconfig.tk
chmod 755 kconfig.tk
make[1]: Leaving directory `/usr/src/linux-2.4.24.new.mtd/scripts'
wish -f scripts/kconfig.tk
[root at localhost linux]# cd ../mtd
[root at localhost mtd]# ls
boot     drivers  grub     INSTALL  Makefile            patches
COPYING  ffs2     html     kernel   mtd-jffs-HOWTO.txt  README
CVS      fs       include  lib      obsolete            util
[root at localhost mtd]# cd patches
[root at localhost patches]# sh patchin.sh /usr/src/linux
Patching /usr/src/linux
Include Filesytems: no
Zlib-Patch needed: no
Method: Link
Can we start now ? [y/N]y

Patching MTD
drivers/mtd
drivers/mtd/chips
drivers/mtd/devices
drivers/mtd/maps
drivers/mtd/nand
include/linux/mtd
Patching done
Please update Documentation/Configure.help from
/usr/src/mtd/Documentation/Configure.help
[root at localhost patches]# cd ../linux
bash: cd: ../linux: No such file or directory
[root at localhost patches]# cd ../..
[root at localhost src]# cd linux
[root at localhost linux]# make xconfig
rm -f include/asm
( cd include ; ln -sf asm-i386 asm)
make -C scripts kconfig.tk
make[1]: Entering directory `/usr/src/linux-2.4.24.new.mtd/scripts'
cat header.tk >> ./kconfig.tk
./tkparse < ../arch/i386/config.in >> kconfig.tk
drivers/mtd/chips/Config.in: 14: unknown command
make[1]: *** [kconfig.tk] Error 1
make[1]: Leaving directory `/usr/src/linux-2.4.24.new.mtd/scripts'
make: *** [xconfig] Error 2 [root at localhost linux]#


Is it something I'm missing?  My kernel sources are the 2.4.24 (latest).


Mark Richards


> -----Original Message-----
> From: David Woodhouse [mailto:dwmw2 at infradead.org]
> Sent: Tuesday, January 20, 2004 09:07
> To: Mark Richards
> Cc: linux-mtd at lists.infradead.org
> Subject: Re: MTD - DOC 2000 freezes on umount
> 
> On Mon, 2004-01-19 at 21:23 -0500, Mark Richards wrote:
> > I've been through several good learning experiences getting my
> development
> > system set up to work with a DOC 2000 for an embedded project.  I've
> finally
> > settled on a RedHat 7.2 distribution and the 2.4.24 kernel.  All worked
> well
> > with the MTD drivers in several other setups: RedHat 9, Mandrake 9.2,
> but
> > for reasons I can't yet fathom, the MTD drivers seem a bit unstable in
> this
> > particular kernel.
> >
> > Most frequently when I perform a umount /mnt/doc (doc being the mount
> point)
> > the shell session freezes (the umount command does not return a prompt).
> 
> Hit SysRq-P and/or SysRq-T to see precisely where it's locked up.
> 
> 
> > I tried in one kernel build to apply the latest sources to my source
> tree
> > using the instructions (and the shell script) but this caused a compile
> > failure.
> 
> Insufficient information to diagnose.
> 
> --
> dwmw2