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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-06 10:34:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-06 10:34:48 -0700 |
| commit | af9b9a53fa0a86921edb86973f9661ccc7ddb90d (patch) | |
| tree | 7750d7ca27f373d1127439dc841171cdbb901a4a | |
| parent | 9ab4233dd08036fe34a89c7dc6f47a8bf2eb29eb (diff) | |
| parent | 48f8b641297df49021093763a3271119a84990a2 (diff) | |
| download | linux-af9b9a53fa0a86921edb86973f9661ccc7ddb90d.tar.bz2 | |
Merge tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd
Pull two MTD fixes from David Woodhouse:
- Fix a logic error in OLPC CAFÉ NAND ready() function.
- Fix regression due to bitflip handling changes.
* tag 'for-linus-20120706' of git://git.infradead.org/linux-mtd:
mtd: cafe_nand: fix an & vs | mistake
mtd: nand: initialize bitflip_threshold prior to BBT scanning
| -rw-r--r-- | drivers/mtd/nand/cafe_nand.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 7 |
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 41371ba1a811..f3f6cfedd69e 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -102,7 +102,7 @@ static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL }; static int cafe_device_ready(struct mtd_info *mtd) { struct cafe_priv *cafe = mtd->priv; - int result = !!(cafe_readl(cafe, NAND_STATUS) | 0x40000000); + int result = !!(cafe_readl(cafe, NAND_STATUS) & 0x40000000); uint32_t irqs = cafe_readl(cafe, NAND_IRQ); cafe_writel(cafe, irqs, NAND_IRQ); diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index d47586cf64ce..a11253a0fcab 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -3501,6 +3501,13 @@ int nand_scan_tail(struct mtd_info *mtd) /* propagate ecc info to mtd_info */ mtd->ecclayout = chip->ecc.layout; mtd->ecc_strength = chip->ecc.strength; + /* + * Initialize bitflip_threshold to its default prior scan_bbt() call. + * scan_bbt() might invoke mtd_read(), thus bitflip_threshold must be + * properly set. + */ + if (!mtd->bitflip_threshold) + mtd->bitflip_threshold = mtd->ecc_strength; /* Check, if we should skip the bad block table scan */ if (chip->options & NAND_SKIP_BBTSCAN) |