[MTD] [OneNAND] Classify the page data and oob buffer

Classify the page data and oob buffer
and it prevents the memory fragementation (writesize + oobsize)

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index d8af8a95e58d..a56d24ada505 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -82,7 +82,8 @@ struct onenand_bufferram {
  * @wq:                 [INTERN] wait queue to sleep on if a OneNAND
  *                      operation is in progress
  * @state:              [INTERN] the current state of the OneNAND device
- * @page_buf:           data buffer
+ * @page_buf:           [INTERN] page main data buffer
+ * @oob_buf:            [INTERN] page oob data buffer
  * @subpagesize:        [INTERN] holds the subpagesize
  * @ecclayout:          [REPLACEABLE] the default ecc placement scheme
  * @bbm:                [REPLACEABLE] pointer to Bad Block Management
@@ -122,6 +123,7 @@ struct onenand_chip {
         wait_queue_head_t       wq;
         onenand_state_t         state;
         unsigned char           *page_buf;
+        unsigned char           *oob_buf;
 
         int                     subpagesize;
         struct nand_ecclayout   *ecclayout;
@@ -156,6 +158,7 @@ struct onenand_chip {
 #define ONENAND_HAS_CONT_LOCK           (0x0001)
 #define ONENAND_HAS_UNLOCK_ALL          (0x0002)
 #define ONENAND_PAGEBUF_ALLOC           (0x1000)
+#define ONENAND_OOBBUF_ALLOC            (0x2000)
 
 /*
  * OneNAND Flash Manufacturer ID Codes