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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/nftlcore.c | |
| parent | 8593fbc68b0df1168995de76d1af38eb62fd6b62 (diff) | |
| download | lwn-9a1fcdfd4bee27c418424cac47abf7c049541297.tar.gz lwn-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/nftlcore.c')
| -rw-r--r-- | drivers/mtd/nftlcore.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c index f6ffe7949b26..dc7573501d8c 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -422,7 +422,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512), 512, &retlen, movebuf); - if (ret < 0) { + if (ret < 0 && ret != -EUCLEAN) { ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512), 512, &retlen, movebuf); @@ -768,7 +768,9 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, } else { loff_t ptr = (lastgoodEUN * nftl->EraseSize) + blockofs; size_t retlen; - if (mtd->read(mtd, ptr, 512, &retlen, buffer)) + int res = mtd->read(mtd, ptr, 512, &retlen, buffer); + + if (res < 0 && res != -EUCLEAN) return -EIO; } return 0; |