[MTD] remove unused ecctype,eccsize fields from struct mtd_info

Remove unused and broken mtd->ecctype and mtd->eccsize fields
from struct mtd_info. Do not remove them from userspace API
data structures (don't want to breake userspace) but mark them
as obsolete by a comment. Any userspace program which uses them
should be half-broken anyway, so this is more about saving
data structure size.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

2 files changed, 2 insertions, 8 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index afab253ad60e..8a2e8bfc1e56 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -117,8 +117,6 @@ struct mtd_info {
         u_int32_t writesize;
 
         u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
-        u_int32_t ecctype;
-        u_int32_t eccsize;
 
         // Kernel-only stuff starts here.
         char *name;
diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index f913c30d7b89..8e501a75a764 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -36,12 +36,6 @@ struct mtd_oob_buf {
 #define MTD_CAP_NORFLASH        (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
 #define MTD_CAP_NANDFLASH       (MTD_WRITEABLE)
 
-
-// Types of automatic ECC/Checksum available
-#define MTD_ECC_NONE            0       // No automatic ECC available
-#define MTD_ECC_RS_DiskOnChip   1       // Automatic ECC on DiskOnChip
-#define MTD_ECC_SW              2       // SW ECC for Toshiba & Samsung devices
-
 /* ECC byte placement */
 #define MTD_NANDECC_OFF         0       // Switch off ECC (Not recommended)
 #define MTD_NANDECC_PLACE       1       // Use the given placement in the structure (YAFFS1 legacy mode)
@@ -61,6 +55,8 @@ struct mtd_info_user {
         uint32_t erasesize;
         uint32_t writesize;
         uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+        /* The below two fields are obsolete and broken, do not use them
+         * (TODO: remove at some point) */
         uint32_t ecctype;
         uint32_t eccsize;
 };