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mtd: edit comments on deprecation of ioctl ECCGETLAYOUT

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There were some improvements and additions necessary in the
comments explaining of the expansion of nand_ecclayout, the
introduction of nand_ecclayout_user, and the deprecation of the
ioctl ECCGETLAYOUT.

Also, I found a better placement for the macro MTD_MAX_ECCPOS_ENTRIES;
next to the definition of MTD_MAX_OOBFREE_ENTRIES in mtd-abi.h. The macro
is really only important for the ioctl code (found in drivers/mtd/mtdchar.c)
but since there are small edits being made to the user-space header, I
figured this is a better location.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Brian Norris 2010-09-19 23:57:12 -07:00 • committed by David Woodhouse
parent cc26c3cd3d
commit 0ceacf36e9
3 changed files with 13 additions and 8 deletions
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8
include/linux/mtd/mtd.h
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@ -112,11 +112,11 @@ struct mtd_oob_ops {
#define MTD_MAX_OOBFREE_ENTRIES_LARGE 32
#define MTD_MAX_ECCPOS_ENTRIES_LARGE 448
#define MTD_MAX_ECCPOS_ENTRIES_OLD 64 /* Previous maximum */
/*
* Correct ECC layout control structure. This replaces old nand_ecclayout
* (mtd-abi.h) that is exported via ECCGETLAYOUT ioctl. It should be expandable
* in the future simply by the above macros.
* Internal ECC layout control structure. For historical reasons, there is a
* similar, smaller struct nand_ecclayout_user (in mtd-abi.h) that is retained
* for export to user-space via the ECCGETLAYOUT ioctl.
* nand_ecclayout should be expandable in the future simply by the above macros.
*/
struct nand_ecclayout {
__u32 eccbytes;