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From: computersforpeace@gmail.com (Brian Norris)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 4/4] mtd: mxc_nand: generate nand_ecclayout for 8 bit ECC
Date: Wed, 20 May 2015 21:40:54 -0700	[thread overview]
Message-ID: <20150521044054.GC23718@brian-ubuntu> (raw)
In-Reply-To: <20150521041128.GI2586@tarshish>

On Thu, May 21, 2015 at 07:11:28AM +0300, Baruch Siach wrote:
> On Wed, May 20, 2015 at 03:41:20PM -0700, Brian Norris wrote:
> > On Wed, May 13, 2015 at 11:17:39AM +0300, Baruch Siach wrote:
> > > +		if (get_eccsize(mtd) == 8)
> > > +			ecc_8bit_layout_4k(this->ecc.layout);
> > 
> > So you're overwriting an existing layout (e.g., nandv2_hw_eccoob_4k).
> > What if you have more than one NAND chip? You might do better by
> > dynamically allocating the memory.
> 
> It would take a quite a bit more code changes then that to have the mxc_nand 
> driver support more than one NAND chip, not to mention the DT binding. As Uwe 

Right. I guess there's also the case that you have more than one
instance of this controller / driver. But I assume that's pretty
unlikely?

> has indicated on a previous version of this series, ecclayout handling in this 
> driver could use some cleanup. This patch just fixes bug, trying to break 
> anything else while doing so.

Yeah, OK. Then I'll apply this patch anyway, and the rest could be
worked out later if this driver ever supports more cases.

> Thanks for reviewing, and for applying the rest of this series.

Applied, thanks.

Brian

  reply	other threads:[~2015-05-21  4:40 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-13  8:17 [PATCH v3 0/4] mtd: mxc_nand: fix 8 bit ECC and large oob Baruch Siach
2015-05-13  8:17 ` [PATCH v3 1/4] mtd: nand: mxc_nand: cleanup copy_spare function Baruch Siach
2015-05-13  8:17 ` [PATCH v3 2/4] mtd: mxc_nand: limit the size of used oob Baruch Siach
2015-05-13  8:17 ` [PATCH v3 3/4] mtd: mxc_nand: fix truncate of unaligned oob copying Baruch Siach
2015-05-13  8:17 ` [PATCH v3 4/4] mtd: mxc_nand: generate nand_ecclayout for 8 bit ECC Baruch Siach
2015-05-13  8:24   ` Uwe Kleine-König
2015-05-20 22:41   ` Brian Norris
2015-05-21  4:11     ` Baruch Siach
2015-05-21  4:40       ` Brian Norris [this message]
2015-05-20 22:38 ` [PATCH v3 0/4] mtd: mxc_nand: fix 8 bit ECC and large oob Brian Norris

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