diff options
| author | Paul Cercueil <paul@crapouillou.net> | 2021-10-16 14:22:25 +0100 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2021-11-19 19:43:04 +0100 |
| commit | 9c9d709965385de5a99f84b14bd5860e1541729e (patch) | |
| tree | d84acf527b31fbfe0e67545f7e0b5608d8722d09 /drivers/mtd | |
| parent | 71e89591502d737c10db2bd4d8fcfaa352552afb (diff) | |
| download | linux-next-9c9d709965385de5a99f84b14bd5860e1541729e.tar.gz | |
mtd: rawnand: davinci: Avoid duplicated page read
The function nand_davinci_read_page_hwecc_oob_first() first reads the
OOB data, extracts the ECC information, programs the ECC hardware before
reading the actual data in a loop.
Right after the OOB data was read, it called nand_read_page_op() to
reset the read cursor to the beginning of the page. This caused the
first page to be read twice: in that call, and later in the loop.
Address that issue by changing the call to nand_read_page_op() to
nand_change_read_column_op(), which will only reset the read cursor.
Cc: <stable@vger.kernel.org> # v5.2
Fixes: a0ac778eb82c ("mtd: rawnand: ingenic: Add support for the JZ4740")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211016132228.40254-2-paul@crapouillou.net
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/davinci_nand.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c index 89de24d3bb7a..2e6a0c1671be 100644 --- a/drivers/mtd/nand/raw/davinci_nand.c +++ b/drivers/mtd/nand/raw/davinci_nand.c @@ -401,7 +401,8 @@ static int nand_davinci_read_page_hwecc_oob_first(struct nand_chip *chip, if (ret) return ret; - ret = nand_read_page_op(chip, page, 0, NULL, 0); + /* Move read cursor to start of page */ + ret = nand_change_read_column_op(chip, 0, NULL, 0, false); if (ret) return ret; |