[MTD] Introduce writesize

At least two flashes exists that have the concept of a minimum write unit,
similar to NAND pages, but no other NAND characteristics.  Therefore, rename
the minimum write unit to "writesize" for all flashes, including NAND.

Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>

2 files changed, 6 insertions, 3 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 73620ef83364..d48c7492392b 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -66,8 +66,12 @@ struct mtd_info {
          * information below if they desire
          */
         u_int32_t erasesize;
+        /* Smallest availlable size for writing to the device.  For NAND,
+         * this is the page size, for some NOR chips, the size of ECC
+         * covered blocks.
+         */
+        u_int32_t writesize;
 
-        u_int32_t oobblock;  // Size of OOB blocks (e.g. 512)
         u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         u_int32_t ecctype;
         u_int32_t eccsize;
@@ -79,7 +83,6 @@ struct mtd_info {
          * MTD_PROGRAM_REGIONS flag is set.
          * (Maybe we should have an union for those?)
          */
-#define MTD_PROGREGION_SIZE(mtd)  (mtd)->oobblock
 #define MTD_PROGREGION_CTRLMODE_VALID(mtd)  (mtd)->oobsize
 #define MTD_PROGREGION_CTRLMODE_INVALID(mtd)  (mtd)->ecctype
 
diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index e4d61f33d5bb..520a3b483100 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -63,7 +63,7 @@ struct mtd_info_user {
         uint32_t flags;
         uint32_t size;   // Total size of the MTD
         uint32_t erasesize;
-        uint32_t oobblock;  // Size of OOB blocks (e.g. 512)
+        uint32_t writesize;
         uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         uint32_t ecctype;
         uint32_t eccsize;