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authorThomas Gleixner <tglx@cruncher.tec.linutronix.de>2006-05-29 14:56:39 +0200
committerThomas Gleixner <tglx@cruncher.tec.linutronix.de>2006-05-29 15:06:51 +0200
commit9a1fcdfd4bee27c418424cac47abf7c049541297 (patch)
tree5baa5f1e1d1a296a319bf6a5a4b636668c107e00 /drivers/mtd/nftlcore.c
parent8593fbc68b0df1168995de76d1af38eb62fd6b62 (diff)
[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.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index f6ffe7949b2..dc7573501d8 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;