[PATCH] Disable Subpage nand write when using Atmel PMECC

[Brian Norris]

On Tue, Mar 11, 2014 at 11:07:57AM +0800, Josh Wu wrote:
> On 3/7/2014 4:02 PM, Brian Norris wrote:
> >On Fri, Mar 07, 2014 at 11:59:46AM +0800, Josh Wu wrote:
> >>On 3/3/2014 7:15 PM, Herve Codina wrote:
> >>>Crash detected on sam5d35 and its pmecc nand ecc controller.
> >>>
> >>>The problem was a call to chip->ecc.hwctl from nand_write_subpage_hwecc
> >>>(nand_base.c) when we write a sub page.
> >>>chip->ecc.hwctl function is not set when we are using PMECC controller.
> >>>As a workaround, set NAND_NO_SUBPAGE_WRITE for PMECC controller in
> >>>order to disable sub page access in nand_write_page.
> >>>
> >>>
> >>>Signed-off-by: Herve Codina <Herve.CODINA at celad.com>
> >>Acked-by: Josh Wu <josh.wu at atmel.com>
> >Pushed to l2-mtd.git. Thanks!
> 
> Sorry for the later thought. But I think this patch should go to the
> stable Linux branch
> since any subpage write will cause crash in SAMA5D3 and AT91SAM9X5.
> So is it possible to add a tag: "Cc: stable at vger.kernel.org" for
> this commit?

Done, thanks for mentioning it! I was thinking of this when I applied
it, actually.

Brian