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Commit 66a10506 authored by Kyungmin Park's avatar Kyungmin Park Committed by David Woodhouse
Browse files

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



Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent 1309d4e6

drivers/mtd/onenand/onenand_base.c

+17 −15
Original line number Diff line number Diff line
@@ -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