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[MTD] [OneNAND] Fix unlock all in Double Density Package (DDP) 

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Kyungmin Park 2008-02-13 15:55:38 +09:00 committed by David Woodhouse
parent 1309d4e684
commit 66a10506d6
1 changed files with 17 additions and 15 deletions
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32
drivers/mtd/onenand/onenand_base.c
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@ -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