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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: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Artem Bityutskiy 2011-12-30 17:00:35 +02:00 committed by David Woodhouse
parent 327cf2922b
commit 381345652f
5 changed files with 19 additions and 29 deletions
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3
drivers/mtd/maps/scb2_flash.c
View File

@ -204,8 +204,7 @@ scb2_flash_remove(struct pci_dev *dev)
return;
/* disable flash writes */
if (scb2_mtd->lock)
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);

15
drivers/mtd/mtdchar.c
View File

@ -814,10 +814,7 @@ 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);
ret = mtd_lock(mtd, einfo.start, einfo.length);
break;
}
@ -828,10 +825,7 @@ 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);
ret = mtd_unlock(mtd, einfo.start, einfo.length);
break;
}
@ -842,10 +836,7 @@ 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);
ret = mtd_is_locked(mtd, einfo.start, einfo.length);
break;
}

18
drivers/mtd/mtdconcat.c
View File

@ -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;
err = mtd_lock(subdev, ofs, size);
if (err)
break;
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;
err = mtd_unlock(subdev, ofs, size);
if (err)
break;
len -= size;
if (len == 0)

6
drivers/mtd/mtdcore.c
View File

@ -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);

6
include/linux/mtd/mtd.h
View File

@ -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);
}