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>
diff --git a/drivers/mtd/nand/docg4.c b/drivers/mtd/nand/docg4.c
index b082026..8e7da01 100644
--- a/drivers/mtd/nand/docg4.c
+++ b/drivers/mtd/nand/docg4.c
@@ -720,6 +720,7 @@
struct docg4_priv *doc = nand->priv;
void __iomem *docptr = doc->virtadr;
uint16_t status, edc_err, *buf16;
+ int bits_corrected = 0;
dev_dbg(doc->dev, "%s: page %08x\n", __func__, page);
@@ -772,7 +773,7 @@
/* If bitflips are reported, attempt to correct with ecc */
if (edc_err & DOC_ECCCONF1_BCH_SYNDROM_ERR) {
- int bits_corrected = correct_data(mtd, buf, page);
+ bits_corrected = correct_data(mtd, buf, page);
if (bits_corrected == -EBADMSG)
mtd->ecc_stats.failed++;
else
@@ -781,7 +782,7 @@
}
writew(0, docptr + DOC_DATAEND);
- return 0;
+ return bits_corrected;
}