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Commit 7799f9ac authored by Artem Bityutskiy's avatar Artem Bityutskiy Committed by David Woodhouse
Browse files

mtd: introduce mtd_lock interface 



Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 85f2f2a8

drivers/mtd/maps/scb2_flash.c

+1 −1
Original line number Diff line number Diff line
@@ -205,7 +205,7 @@ scb2_flash_remove(struct pci_dev *dev) 


	/* disable flash writes */

	if (scb2_mtd->lock)

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

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



	mtd_device_unregister(scb2_mtd);

	map_destroy(scb2_mtd);

drivers/mtd/mtdchar.c

+1 −1
Original line number Diff line number Diff line
@@ -824,7 +824,7 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg) 
		if (!mtd->lock)

			ret = -EOPNOTSUPP;

		else

			ret = mtd->lock(mtd, einfo.start, einfo.length);

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

		break;

	}

drivers/mtd/mtdconcat.c

+1 −1
Original line number Diff line number Diff line
@@ -556,7 +556,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) 
			size = len;



		if (subdev->lock) {

			err = subdev->lock(subdev, ofs, size);

			err = mtd_lock(subdev, ofs, size);

			if (err)

				break;

		} else

drivers/mtd/mtdpart.c

+1 −1
Original line number Diff line number Diff line
@@ -279,7 +279,7 @@ static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) 
	struct mtd_part *part = PART(mtd);

	if ((len + ofs) > mtd->size)

		return -EINVAL;

	return part->master->lock(part->master, ofs + part->offset, len);

	return mtd_lock(part->master, ofs + part->offset, len);

}



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

include/linux/mtd/mtd.h

+7 −2
Original line number Diff line number Diff line
@@ -207,14 +207,13 @@ struct mtd_info { 
	int (*writev) (struct mtd_info *mtd, const struct kvec *vecs,

			unsigned long count, loff_t to, size_t *retlen);

	void (*sync) (struct mtd_info *mtd);

	int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);



	/* Backing device capabilities for this device

	 * - provides mmap capabilities

	 */

	struct backing_dev_info *backing_dev_info;



	/* Chip-supported device locking */

	int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);

	int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);

	int (*is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
@@ -384,6 +383,12 @@ static inline void mtd_sync(struct mtd_info *mtd) 
	mtd->sync(mtd);

}



/* Chip-supported device locking */

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

{

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

}



static inline struct mtd_info *dev_to_mtd(struct device *dev)

{

	return dev ? dev_get_drvdata(dev) : NULL;