diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 8d7d21be154..15a62db656d 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -2052,7 +2052,7 @@ static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) * * Check lock status */ -static void onenand_check_lock_status(struct onenand_chip *this) +static int onenand_check_lock_status(struct onenand_chip *this) { unsigned int value, block, status; unsigned int end; @@ -2070,9 +2070,13 @@ static void onenand_check_lock_status(struct onenand_chip *this) /* Check lock status */ status = this->read_word(this->base + ONENAND_REG_WP_STATUS); - if (!(status & ONENAND_WP_US)) + if (!(status & ONENAND_WP_US)) { printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status); + return 0; + } } + + return 1; } /** @@ -2081,9 +2085,11 @@ static void onenand_check_lock_status(struct onenand_chip *this) * * Unlock all blocks */ -static int onenand_unlock_all(struct mtd_info *mtd) +static void onenand_unlock_all(struct mtd_info *mtd) { struct onenand_chip *this = mtd->priv; + loff_t ofs = 0; + size_t len = this->chipsize; if (this->options & ONENAND_HAS_UNLOCK_ALL) { /* Set start block address */ @@ -2099,23 +2105,19 @@ static int onenand_unlock_all(struct mtd_info *mtd) & ONENAND_CTRL_ONGO) continue; + /* Check lock status */ + if (onenand_check_lock_status(this)) + return; + /* Workaround for all block unlock in DDP */ if (ONENAND_IS_DDP(this)) { - /* 1st block on another chip */ - loff_t ofs = this->chipsize >> 1; - size_t len = mtd->erasesize; - - onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); + /* All blocks on another chip */ + ofs = this->chipsize >> 1; + len = this->chipsize >> 1; } - - onenand_check_lock_status(this); - - return 0; } - onenand_do_lock_cmd(mtd, 0x0, this->chipsize, ONENAND_CMD_UNLOCK); - - return 0; + onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); } #ifdef CONFIG_MTD_ONENAND_OTP |