From f02ea4e6a47d50a38f5baadbe87f5087dd337db0 Mon Sep 17 00:00:00 2001
From: Huang Shijie <b32955@freescale.com>
Date: Mon, 13 Jan 2014 14:27:12 +0800
Subject: [PATCH] mtd: nand: kill the the NAND_MAX_PAGESIZE/NAND_MAX_OOBSIZE
 for nand_buffers{}

The patch converts the arrays to buffer pointers for nand_buffers{}.

The cafe_nand.c is the only NAND_OWN_BUFFERS user which allocates
nand_buffers{} itself.

This patch disables the DMA for nand_scan_ident, and restores the DMA
status after we finish the nand_scan_ident. This way, we can get page
size and OOB size and use them to allocate cafe->dmabuf.

Since the cafe_nand.c uses the NAND_ECC_HW_SYNDROME ECC mode, we do not
allocate the buffers for @ecccalc and @ecccode.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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