Commit 38134565 authored by Artem Bityutskiy's avatar Artem Bityutskiy Committed by David Woodhouse
Browse files

mtd: do not use mtd->lock, unlock and is_locked directly 



Instead, call the corresponding MTD API function which will return
'-EOPNOTSUPP' if the operation is not supported.

Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 327cf292

drivers/mtd/maps/scb2_flash.c

+1 −2
Original line number Diff line number Diff line
@@ -204,7 +204,6 @@ scb2_flash_remove(struct pci_dev *dev) 
		return;



	/* disable flash writes */

	if (scb2_mtd->lock)

	mtd_lock(scb2_mtd, 0, scb2_mtd->size);



	mtd_device_unregister(scb2_mtd);

drivers/mtd/mtdchar.c

+3 −12
Original line number Diff line number Diff line
@@ -814,9 +814,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg) 
		if (copy_from_user(&einfo, argp, sizeof(einfo)))

			return -EFAULT;



		if (!mtd->lock)

			ret = -EOPNOTSUPP;

		else

		ret = mtd_lock(mtd, einfo.start, einfo.length);

		break;

	}
@@ -828,9 +825,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg) 
		if (copy_from_user(&einfo, argp, sizeof(einfo)))

			return -EFAULT;



		if (!mtd->unlock)

			ret = -EOPNOTSUPP;

		else

		ret = mtd_unlock(mtd, einfo.start, einfo.length);

		break;

	}
@@ -842,9 +836,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg) 
		if (copy_from_user(&einfo, argp, sizeof(einfo)))

			return -EFAULT;



		if (!mtd->is_locked)

			ret = -EOPNOTSUPP;

		else

		ret = mtd_is_locked(mtd, einfo.start, einfo.length);

		break;

	}

drivers/mtd/mtdconcat.c

+6 −12
Original line number Diff line number Diff line
@@ -555,12 +555,9 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) 
		else

			size = len;



		if (subdev->lock) {

		err = mtd_lock(subdev, ofs, size);

		if (err)

			break;

		} else

			err = -EOPNOTSUPP;



		len -= size;

		if (len == 0)
@@ -595,12 +592,9 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) 
		else

			size = len;



		if (subdev->unlock) {

		err = mtd_unlock(subdev, ofs, size);

		if (err)

			break;

		} else

			err = -EOPNOTSUPP;



		len -= size;

		if (len == 0)

drivers/mtd/mtdcore.c

+3 −3
Original line number Diff line number Diff line
@@ -339,9 +339,9 @@ int add_mtd_device(struct mtd_info *mtd) 
	mtd->writesize_mask = (1 << mtd->writesize_shift) - 1;



	/* Some chips always power up locked. Unlock them now */

	if ((mtd->flags & MTD_WRITEABLE)

	    && (mtd->flags & MTD_POWERUP_LOCK) && mtd->unlock) {

		if (mtd_unlock(mtd, 0, mtd->size))

	if ((mtd->flags & MTD_WRITEABLE) && (mtd->flags & MTD_POWERUP_LOCK)) {

		error = mtd_unlock(mtd, 0, mtd->size);

		if (error && error != -EOPNOTSUPP)

			printk(KERN_WARNING

			       "%s: unlock failed, writes may not work\n",

			       mtd->name);

include/linux/mtd/mtd.h

+6 −0
Original line number Diff line number Diff line
@@ -406,16 +406,22 @@ static inline void mtd_sync(struct mtd_info *mtd) 
/* Chip-supported device locking */

static inline int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)

{

	if (!mtd->lock)

		return -EOPNOTSUPP;

	return mtd->lock(mtd, ofs, len);

}



static inline int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)

{

	if (!mtd->unlock)

		return -EOPNOTSUPP;

	return mtd->unlock(mtd, ofs, len);

}



static inline int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)

{

	if (!mtd->is_locked)

		return -EOPNOTSUPP;

	return mtd->is_locked(mtd, ofs, len);

}