[U-Boot] mtd: nand: allow NAND_NO_SUBPAGE_WRITE to be set from driver
Scott Wood
scottwood at freescale.com
Tue Sep 18 01:55:12 CEST 2012
On Thu, Aug 30, 2012 at 01:39:38PM -0000, Marek Vasut wrote:
> This is based on Linux kernel -next:
>
> commit a1256b0e087ed3cdb584c683acb966ee885f733c
> Author: Brian Norris <computersforpeace at gmail.com>
> Date: Fri Jul 13 09:28:24 2012 -0700
>
> mtd: nand: allow NAND_NO_SUBPAGE_WRITE to be set from driver
>
> The NAND_CHIPOPTIONS_MSK has limited utility and is causing real bugs. It
> silently masks off at least one flag that might be set by the driver
> (NAND_NO_SUBPAGE_WRITE). This breaks the GPMI NAND driver and possibly
> others.
>
> Really, as long as driver writers exercise a small amount of care with
> NAND_* options, this mask is not necessary at all; it was only here to
> prevent certain options from accidentally being set by the driver. But the
> original thought turns out to be a bad idea occasionally. Thus, kill it.
>
> Note, this patch fixes some major gpmi-nand breakage.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Brian Norris <computersforpeace at gmail.com>
> Cc: Eric Nelson <eric.nelson at boundarydevices.com>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Otavio Salvador <otavio at ossystems.com.br>
> Cc: Scott Wood <scottwood at freescale.com>
Applied to u-boot-nand-flash with the SHA1 updated based on current
linux-next: 14f44abf1dafc20ba42ce8616a8fc8fbd1b3712b
-Scott
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