[MTD NAND] Allocate chip->buffers separately to allow it to be overridden
In particular, the board driver might need it to be DMAable.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 88d690d..cd4fe9a 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -183,7 +183,9 @@
#define NAND_USE_FLASH_BBT 0x00010000
/* This option skips the bbt scan during initialization. */
#define NAND_SKIP_BBTSCAN 0x00020000
-
+/* This option is defined if the board driver allocates its own buffers
+ (e.g. because it needs them DMA-coherent */
+#define NAND_OWN_BUFFERS 0x00040000
/* Options set by nand scan */
/* Nand scan has allocated controller struct */
#define NAND_CONTROLLER_ALLOC 0x80000000
@@ -385,7 +387,7 @@
struct nand_ecclayout *ecclayout;
struct nand_ecc_ctrl ecc;
- struct nand_buffers buffers;
+ struct nand_buffers *buffers;
struct nand_hw_control hwcontrol;
struct mtd_oob_ops ops;