[U-Boot] [PATCH V2] nand: fix buffer alignment in new verification feature

[Stephen Warren <swarren@wwwdotorg.org>]

On 04/14/2015 08:59 AM, Stephen Warren wrote:
> From: Stephen Warren <swarren@nvidia.com>
>
> On systems with caches enabled, NAND I/O may need to flush/invalidate
> the cache during read/write operations. For this to work correctly, all
> buffers must be cache-aligned. Fix nand_verify*() to allocate aligned
> buffers.
>
> This prevents cache alignment warnings from being spewed when using
> U-Boot to write an updated version of itself to flash on NVIDIA Tegra
> Seaboard (after perturbation of stack/data layout in current
> u-boot-dm/next branch).
>
> I have validatd (executed) nand_verify(), but I don't think I've executed
> nand_verify_page_oob(); testing of that would be useful.
>
> Cc: Peter Tyser <ptyser@xes-inc.com>
> Cc: Heiko Schocher <hs@denx.de>
> Cc: Scott Wood <scottwood@freescale.com>
> Fixes: 59b5a2ad83df ("nand: Add verification functions")
> Signed-off-by: Stephen Warren <swarren@nvidia.com>
> ---
> v2: Use memalign() rather than ALLOC_CACHE_ALIGN_BUFFER() so that the
> buffer is allocated from the heap not on the stack, to reduce stack
> usage.

Scott, does this version look good?