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

Scott Wood oss at buserror.net
Sat Feb 13 00:18:51 CET 2016


On Thu, 2016-01-14 at 02:41 +0100, Marek Vasut wrote:
> On Tuesday, October 28, 2014 at 11:45:08 PM, Scott Wood wrote:
> > 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...
> 
> Can you collect the MTD patches which are applicable at least and drop this
> one?

4/10 is already merged.  Which patches are you referring to that don't have
comments, still apply cleanly, and are patching a NAND file?

-Scott



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