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| author | Thomas Gleixner <tglx@cruncher.tec.linutronix.de> | 2006-05-29 14:56:39 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@cruncher.tec.linutronix.de> | 2006-05-29 15:06:51 +0200 |
| commit | 9a1fcdfd4bee27c418424cac47abf7c049541297 (patch) | |
| tree | 5baa5f1e1d1a296a319bf6a5a4b636668c107e00 /drivers/mtd/inftlcore.c | |
| parent | 8593fbc68b0df1168995de76d1af38eb62fd6b62 (diff) | |
| download | linux-9a1fcdfd4bee27c418424cac47abf7c049541297.tar.gz linux-9a1fcdfd4bee27c418424cac47abf7c049541297.tar.bz2 linux-9a1fcdfd4bee27c418424cac47abf7c049541297.zip | |
[MTD] NAND Signal that a bitflip was corrected by ECC
Return -EUCLEAN on read when a bitflip was detected and corrected, so the
clients can react and eventually copy the affected block to a spare one.
Make all in kernel users aware of the change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/mtd/inftlcore.c')
| -rw-r--r-- | drivers/mtd/inftlcore.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index efb1a95aa0a0..1e21a2c3dd29 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -355,7 +355,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE, &retlen, movebuf); - if (ret < 0) { + if (ret < 0 && ret != -EUCLEAN) { ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE, @@ -922,7 +922,10 @@ foundit: } else { size_t retlen; loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs; - if (mtd->read(mtd, ptr, SECTORSIZE, &retlen, buffer)) + int ret = mtd->read(mtd, ptr, SECTORSIZE, &retlen, buffer); + + /* Handle corrected bit flips gracefully */ + if (ret < 0 && ret != -EUCLEAN) return -EIO; } return 0; |