I got errors like: "writing -128982 bytes to chunk, called from around 
4964" which brought me into yaffs_WriteDataToFile.

It's bad enough when the error occurs that a while(1){} is executed and 
the kernel hangs.

Here's the problems I have with this puppy:

1. You calculate the last chunk in the file with yaffs_AddrToChunk but 
then you auto-increment it. Why?

2. then at ok check for curve ball, shouldn't the if be <=  and not just 
< ???

3. the calculation of nBytesRead subtracts two from chunk, but this 
should be -1 even with the auto-increment.

4. at the top of the routine, if you call it with > 2048 bytes, 
yaffs_AddrToChunk gets re-calculated EVERY TIME, guaranteeing you trash 
something.

Has somebody cleaned up this thing?

Cal Page