I was able to fix my problem by adding the following code to nandmtd2_write_chunk_tags() function:

	struct yaffs_dev *dev_copy;
	dev_copy = kmalloc(sizeof(struct yaffs_dev), GFP_KERNEL);
	if (dev_copy) {
		memcpy(dev_copy, dev, sizeof(struct yaffs_dev));
		yaffs_trace(YAFFS_TRACE_OS, "made a copy of device structure");
	}
	
	.
	.
	.
	.

	kfree(dev_copy);

I am not sure why this worked.

Jacob

On 2012-01-12 15:17, Gorelik, Jacob (335F) wrote:
> Hello,
> 
> I am trying to use yaffs2 on my board's nand flash and having some problems. 
> I am using linux kernel 2.6.39.3. I've attached a sample screen capture. 
> Is there something I am missing in my kernel's configuration?
> 
> Thank you,
> Jacob
> 
> ~ # /mtd/sbin/flash_erase /dev/mtd0 0 0
>