Re: A question on ECC

[Thomas Gleixner <tglx@linutronix.de>]

On Monday 14 April 2003 19:40, Edward J. Lee wrote:
>
> this->eccmode is indeed set to NAND_ECC_SOFT.
> I guess my case is kind of 'extra-tricky'. I just found out another
> weird thing,
> that the warning messages complaining '...without ECC...' do NOT appear
> when I'm 'writing' on the chip. Strange, eh. :'(

Can you put some debug output YAFFS ?

--- yaffs_mtdif.c	8 Apr 2003 19:53:44 -0000	1.9
+++ yaffs_mtdif.c	14 Apr 2003 10:23:39 -0000
@@ -90,10 +90,12 @@
 		if(dev->useNANDECC)
 		{   // Careful, this call adds 2 ints to the end of the spare data.  
Calling function should
             // allocate enough memory for spare, i.e. 
[YAFFS_BYTES_PER_SPARE+2*sizeof(int)].
+	    	printk (KERN_DEBUG "YAFFS ReadChunk with real ECC_INFO\n");
     		retval = 
mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_oobinfo);            
 		}
 		else
 		{
+		    	printk (KERN_DEBUG "YAFFS ReadChunk with dummy ECC_INFO\n");
 			retval = 
mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo);
 		}
 	}


-- 
Thomas
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