blk_dev[93].request_fn == NULL bug is still there

[Levi Khatskevitch]

> > I've just tested the new code, the doc2001 use count still gets 
>increasingly
> > negative on each access to /dev/mtd0. Like:
>
>Are you sure you rebuilt mtdchar.o?
>
>--
>dwmw2
>
>

Ok, I was wrong I used the old vmlinux file :-). Module use count is correct 
now.

Now I've just reproduced the blk_dev[93].request_fn == NULL bug in the 
latest code. Here is how:

1) build the kernel with nftl*.o build in and doc*.o as modules.

2) insmod docecc.o; insmod doc2001.o; insmod docprobe.o
you'll see:

M-Systems DiskOnChip driver. (C) 1999 Machine Vision Holdings, Inc.
DiskOnChip Millennium found at address 0xFFFC8000
Flash chip found: Manufacture ID: 98, Chip ID: E6 (Toshiba TC58V64AFT/DC)
1 flash chips found. Total DiskOnChip size: 8 Mbytes
Cannot calculate an NFTL geometry to match size of 0x37c0.
Using C:1019 H:14 S:1 (== 0x37ba sects)
nftla:<3>ll_rw_block: Trying to read nonexistent block-device 5d:00 (0)
unable to read partition table
...

where "ll_rw_block: Trying to read nonexistent block-device 5d:00 (0)" is 
caused by blk_dev[0x5d].request_fn == NULL
any subsequent access to /dev/nftla results in the same error.

at the same time nftl *is* registered to MAJOR# 93 according to:
[root at c1000s-dtd /]# cat /proc/devices
Character devices:
  1 mem
  2 pty
  3 ttyp
  4 ttyS
  5 cua
10 misc
90 mtd
128 ptm
136 pts

Block devices:
  1 ramdisk
  2 fd
  7 loop
93 nftl
^^^^^^^^^

Regards,
- Levi

_____________________________________________________________________________________
Get more from the Web.  FREE MSN Explorer download : http://explorer.msn.com



To unsubscribe, send "unsubscribe mtd" to majordomo at infradead.org