NAND Flash.... ll_rw_block error report...

[Kim Sang Hun]

Before saying problem, i'll explain my environment...

ARM920T + NAND Flash...

Linux kernel 2.2.13

So, I use MTD for 2.2.18 and patch manualy...

and modify spia.c

Kernel configuration is

CONFIG_MTD=y
CONFIG_MTD_DEBUG=y
CONFIG_MTD_DEBUG_VERBOSE=0
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_ECC=y
CONFIG_MTD_NAND_SPIA=y
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLOCK=y

and.... booting linux

> root> cat /proc/mtd
> mtd0: 0x00200000 "spia NAND flash partition 1"
---> Find my nand flash...(ok?)

When I command read/write/erase using /dev/mtd0 , all operations work
well.

PROBLEM..........PROBLEM.........

but. 
To use JFFS.
> root> dd of=/dev/mtdblock0 if=jffs.img
> mtdblock_open
> ok
> ll_rw_block: Trying to read nonexistent block-device 1f:00 (0)
> /dev/mtdblock_release
> mtdblock0: Input/output error
> nand_sync:called
> ok

Failure happen in  "checking dev->request_fn" ( in functin
ll_rw_block)

I don't know the reason why this happen...?



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Sang-Hun , Kim
Multimedia Systems Lab. SNU
School of EE. Seoul National Univ.
E-Mail : shkim at fdma.snu.ac.kr
Http://fdma.snu.ac.kr/~shkim
HP : 017-398-6203
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