[U-Boot] The command "nand write.yaffs" is not working correctly

[Scott Wood <scottwood@freescale.com>]

On 09/30/2011 04:10 AM, Jin Zhengxiong-R64188 wrote:
> I once met the similar issue with 2011.03 base and fixed it with following patch, But 
> I didn't do a detail checking for that, FYI...
> 
> @@ -499,6 +499,7 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
>  		return -EINVAL;
>  	}
>  
> +#ifndef CONFIG_CMD_NAND_YAFFS
>  	if (!need_skip) {
>  		rval = nand_write (nand, offset, length, buffer);
>  		if (rval == 0)
> @@ -509,13 +510,12 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
>  			offset, rval);
>  		return rval;
>  	}
> -
> +#endif

This should be a runtime check for whether yaffs was actually requested.
 The current code does something similar for WITH_DROP_FFS.

Or perhaps we should just drop this optimization altogether, barring
someone demonstrating that it makes a huge performance difference.

>  	while (left_to_write > 0) {
>  		size_t block_offset = offset & (nand->erasesize - 1);
>  		size_t write_size;
>  
>  		WATCHDOG_RESET ();
> -
>  		if (nand_block_isbad (nand, offset & ~(nand->erasesize - 1))) {
>  			printf ("Skip bad block 0x%08llx\n",
>  				offset & ~(nand->erasesize - 1));
> @@ -546,7 +546,7 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
>  				ops.oobbuf = ops.datbuf + pagesize;
>  
>  				rval = nand->write_oob(nand, offset, &ops);
> -				if (!rval)
> +				if ( rval != 0)
>  					break;
>  
>  				offset += pagesize;

Drop these.

-Scott