Problems with r/w on mtdblock0

[Ian]

I can also confirm that this problem exists when compiled as modules (and also with
the #define DOC_SINGLE_DRIVER commented out).


It isn't recent.  Before this mornings attempts I was using a CVS from about 4-5days 
ago and it was in that bundle that I noticed it (I'm pretty sure it was pre the combo
mods that Ollie did)



  ----- Original Message -----
>From: "Ian" <Relativity at humanheuristic.com>
>To: <mtd at infradead.org>
>Subject:  Problems with r/w on mtdblock0
>Date: Tue, 05 Dec 2000 08:36:59 +1000
>
> 
> 
>   Have I done something wrong to get this error?
> 
>     bash# dd if=/dev/zero of=/dev/mtdblock0 bs=512 count=1
>     end_request: I/O error, dev 1f:00 (mtdblock), sector 0
>     dd: /dev/mtdblock0: Input/output error
>     1+0 records in
>     0+0 records out
> 
>     bash# /bin/dd if=/dev/mtdblock0 of=/dev/null bs=512 count=1
>     end_request: I/O error, dev 1f:00 (mtdblock), sector 0
>     /bin/dd: /dev/mtdblock0: Input/output error
>     0+0 records in
>     0+0 records out
> 
> 
>   I have no problems reading and writing to nftla on my DoC Millennium ... just
> not the block device.
> 
>   NB: I'm trying to use the block device, because dd'ing to the first and second
> 512bytes of the character device, while appearing successful,  does not "stick".
> A hexdump immediately after a dd shows no sign of the dd data.
> 
>   Note, too, that dd'ing to a non existent DoC yields a different error;
>     bash# /bin/dd if=/dev/mtdblock1 of=/dev/null bs=512 count=1
>     /bin/dd: /dev/mtdblock1: No such device
> 
>     brw-r--r--   1 root     root      31,   0 Dec  4 20:14 /dev/mtdblock0
>     brw-r--r--   1 root     root      31,   1 Dec  4 20:14 /dev/mtdblock1
> 
> 
> Erm;
>     bash# cat  /proc/mtd
>     mtd0: 00800000 "DiskOnChip Millennium"
> 
> is that supposed to be the memory location for the DoC ?
> 
> 
> Boot process  (My DoC drivers are compiled internally to the kernel, *not* as modules)
>     Initializing MTD Layer
>     M-Systems DiskOnChip driver. (C) 1999 Machine Vision Holdings, Inc.
>     DiskOnChip Millennium found at address 0xDC000
>     Flash chip found: Manufacture ID: 98, Chip ID: E6 (Toshiba TC58V64AFT/DC)
>     1 flash chips found. Total DiskOnChip size: 8 Mbytes
> 
> 
> 
> 
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> 
> 
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