diff options
| author | Mike Dunn <mikedunn@newsguy.com> | 2012-04-25 12:06:09 -0700 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-05-13 23:12:06 -0500 |
| commit | 3f91e94f7f511de74c0d2abe08672ccdbdd1961c (patch) | |
| tree | d33e95596bbebc824a1331c83951a25d2118fd36 /drivers/mtd/nand/cafe_nand.c | |
| parent | d062d4ede877fcd2ecc4c6262abad09a6f32950a (diff) | |
| download | op-kernel-dev-3f91e94f7f511de74c0d2abe08672ccdbdd1961c.zip op-kernel-dev-3f91e94f7f511de74c0d2abe08672ccdbdd1961c.tar.gz | |
mtd: nand: read_page() returns max_bitflips
The ecc.read_page() method for nand drivers is changed to return the maximum
number of bitflips that were corrected on any one region covering an ecc step,
This patch doesn't change what the nand code returns to mtd.
This v2 includes the change to the fsl_ifc_nand driver requested by Scott¹.
¹ http://lists.infradead.org/pipermail/linux-mtd/2012-April/040883.html
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Acked-by (freescale changes): Scott Wood <scottwood@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/nand/cafe_nand.c')
| -rw-r--r-- | drivers/mtd/nand/cafe_nand.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 2973d97..886ff3a 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -383,6 +383,7 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) { struct cafe_priv *cafe = mtd->priv; + unsigned int max_bitflips = 0; cafe_dev_dbg(&cafe->pdev->dev, "ECC result %08x SYN1,2 %08x\n", cafe_readl(cafe, NAND_ECC_RESULT), @@ -449,10 +450,11 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, } else { dev_dbg(&cafe->pdev->dev, "Corrected %d symbol errors\n", n); mtd->ecc_stats.corrected += n; + max_bitflips = max_t(unsigned int, max_bitflips, n); } } - return 0; + return max_bitflips; } static struct nand_ecclayout cafe_oobinfo_2048 = { |
