Re: Jffs2 write Error

[Phil Wilshire <philwil@earthlink.net>]

Hi All,

Russ Dill wrote:
> 
> On Tue, 2003-11-04 at 06:37, Phil Wilshire wrote:
> > Hi Guys,
> >
> > I am seeing a frequent error
> >
> > on an ARM7TDMI  system
> >   uClinux version 2.4.20-uc0
> >
> > Processor: Atmel AT91M40xxx revision 0
> > Architecture: EB01
> >
> > physmap flash device: 200000 at 1600000
> > Found: Atmel AT49BV32XA
> > number of JEDEC chips: 1
> 

I have found my original problem.

The 
   do_write_oneword 
routine in 
  cfi_cmdset_0002.c 

was being given values for datum wider than the 16 bits
we are allowed to write to the device.
The readback being limited to 16 bits, of course , failed to match


The data was being given to do_write_oneword by gc.c 

Here is the error output

Last[3] is 66, datum is 8000066 addr 3028c
Write of 49 bytes at 0x00030264 failed. returned -5, retlen 40
jffs2_write_dirent in garbage_collect_dirent failed: -5

As you can see 8000066 is impossible to write to a 16 bit device.



I put an extra check on the word size in do_write_oneword and the error just went away.

regards  
   Phil Wilshire

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