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| author | Kyungmin Park <kyungmin.park@samsung.com> | 2006-12-22 16:02:50 +0900 |
|---|---|---|
| committer | Artem Bityutskiy <dedekind@infradead.org> | 2007-01-10 14:34:42 +0200 |
| commit | f62724873652ddb19edf7f92843e9456fe3be3ea (patch) | |
| tree | a12fb1e5496b28d2ff7ea9af02bc75177fcf1f0f /drivers/mtd | |
| parent | 85de3d9bc779c198f8667cffc291b0ecad082b5e (diff) | |
| download | linux-3.10-f62724873652ddb19edf7f92843e9456fe3be3ea.tar.gz linux-3.10-f62724873652ddb19edf7f92843e9456fe3be3ea.tar.bz2 linux-3.10-f62724873652ddb19edf7f92843e9456fe3be3ea.zip | |
[MTD] OneNAND: fix onenand_wait bug
Fix onenand_wait error reporting
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 38 | ||||
| -rw-r--r-- | drivers/mtd/onenand/onenand_bbt.c | 3 |
2 files changed, 17 insertions, 24 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 63ca61b83bf..3fab4d1b68b 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -318,15 +318,10 @@ static int onenand_wait(struct mtd_info *mtd, int state) ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); if (ctrl & ONENAND_CTRL_ERROR) { - /* It maybe occur at initial bad block */ DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: controller error = 0x%04x\n", ctrl); - /* Clear other interrupt bits for preventing ECC error */ - interrupt &= ONENAND_INT_MASTER; - } - - if (ctrl & ONENAND_CTRL_LOCK) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: it's locked error = 0x%04x\n", ctrl); - return -EACCES; + if (ctrl & ONENAND_CTRL_LOCK) + DEBUG(MTD_DEBUG_LEVEL0, "onenand_wait: it's locked error.\n"); + return ctrl; } if (interrupt & ONENAND_INT_READ) { @@ -750,21 +745,21 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, ret = this->wait(mtd, FL_READING); /* First copy data and check return value for ECC handling */ - onenand_update_bufferram(mtd, from, 1); + onenand_update_bufferram(mtd, from, !ret); } this->read_bufferram(mtd, ONENAND_DATARAM, buf, column, thislen); - read += thislen; - - if (read == len) - break; - if (ret) { DEBUG(MTD_DEBUG_LEVEL0, "onenand_read: read failed = %d\n", ret); goto out; } + read += thislen; + + if (read == len) + break; + from += thislen; buf += thislen; } @@ -832,16 +827,16 @@ int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); + if (ret) { + DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_oob: read failed = 0x%x\n", ret); + goto out; + } + read += thislen; if (read == len) break; - if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_oob: read failed = %d\n", ret); - goto out; - } - buf += thislen; /* Read more? */ @@ -1199,10 +1194,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) ret = this->wait(mtd, FL_ERASING); /* Check, if it is write protected */ if (ret) { - if (ret == -EPERM) - DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Device is write protected!!!\n"); - else - DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Failed erase, block %d\n", (unsigned) (addr >> this->erase_shift)); + DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Failed erase, block %d\n", (unsigned) (addr >> this->erase_shift)); instr->state = MTD_ERASE_FAILED; instr->fail_addr = addr; goto erase_exit; diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c index 6cceeca4056..98f8fd1c637 100644 --- a/drivers/mtd/onenand/onenand_bbt.c +++ b/drivers/mtd/onenand/onenand_bbt.c @@ -93,7 +93,8 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr ret = onenand_do_read_oob(mtd, from + j * mtd->writesize + bd->offs, readlen, &retlen, &buf[0]); - if (ret) + /* If it is a initial bad block, just ignore it */ + if (ret && !(ret & ONENAND_CTRL_LOAD)) return ret; if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) { |