[U-Boot] [PATCH 07/10] mtd: nand: s3c: Add missing correction and select_chip functions

Scott Wood scottwood at freescale.com
Tue Oct 28 23:45:08 CET 2014


On Sat, 2014-10-11 at 18:42 +0200, Marek Vasut wrote:
> +	/* sometimes people do not think about using the ECC, so check
> +	 * to see if we have an 0xff,0xff,0xff read ECC and then ignore
> +	 * the error, on the assumption that this is an un-eccd page.
> +	 */

Eww.  I suppose I won't argue too loudly if Linux is doing the same
thing, but what if it's a corrupted blank page, or the ECC just happened
to turn out as all 0xff?  It seems like there should at least be a
warning the first time this happens, and ideally it should be
configurable.

> +	if (read_ecc[0] == 0xff && read_ecc[1] == 0xff && read_ecc[2] == 0xff
> +	    /*&& info->platform->ignore_unset_ecc*/)
>  		return 0;

So it looks like it is configurable in Linux, but you've commented it
out here.

> @@ -221,6 +298,8 @@ int board_nand_init(struct nand_chip *nand)
>  
>  	nand->dev_ready = s3c24x0_dev_ready;
>  
> +	nand->chip_delay = 50;

I'm not sure how this is related to the changes described in the
changelog...

-Scott




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