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| author |   Brian Norris <computersforpeace@gmail.com> | 2013-03-13 09:51:31 -0700 |
|---|---|---|
| committer |   David Woodhouse <David.Woodhouse@intel.com> | 2013-03-14 12:48:54 +0000 |
| commit | 5bc7c33ca93a285dcfe7b7fd64970f6314440ad1 (patch) | |
| tree | 0ce80c4e6559c939c2eaf86c76950b177c4c157a /include | |
| parent | mtd: bcm47xxpart: look for NVRAM at the end of device (diff) | |
| download | linux-dev-5bc7c33ca93a285dcfe7b7fd64970f6314440ad1.tar.xz linux-dev-5bc7c33ca93a285dcfe7b7fd64970f6314440ad1.zip | |
mtd: nand: reintroduce NAND_NO_READRDY as NAND_NEED_READRDY
This partially reverts commit 1696e6bc2ae83734e64e206ac99766ea19e9a14e
("mtd: nand: kill NAND_NO_READRDY").
In that patch I overlooked a few things.
The original documentation for NAND_NO_READRDY included "True for all
large page devices, as they do not support autoincrement." I was
conflating "not support autoincrement" with the NAND_NO_AUTOINCR option,
which was in fact doing nothing. So, when I dropped NAND_NO_AUTOINCR, I
concluded that I then could harmlessly drop NAND_NO_READRDY. But of
course the fact the NAND_NO_AUTOINCR was doing nothing didn't mean
NAND_NO_READRDY was doing nothing...
So, NAND_NO_READRDY is re-introduced as NAND_NEED_READRDY and applied
only to those few remaining small-page NAND which needed it in the first
place.
Cc: stable@kernel.org [3.5+]
Reported-by: Alexander Shiyan <shc_work@mail.ru>
Tested-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mtd/nand.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 7ccb3c59ed60..ef52d9c91459 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -187,6 +187,13 @@ typedef enum { * This happens with the Renesas AG-AND chips, possibly others. */ #define BBT_AUTO_REFRESH 0x00000080 +/* + * Chip requires ready check on read (for auto-incremented sequential read). + * True only for small page devices; large page devices do not support + * autoincrement. + */ +#define NAND_NEED_READRDY 0x00000100 + /* Chip does not allow subpage writes */ #define NAND_NO_SUBPAGE_WRITE 0x00000200 |