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mtd: introduce mtd_lock_user_prot_reg interface

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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
2011-12-23 18:55:49 +02:00
committed by David Woodhouse
parent 482b43adbb
commit 4403dbfb45
3 changed files with 10 additions and 4 deletions
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2
drivers/mtd/mtdchar.c
View File

@@ -960,7 +960,7 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
return -EFAULT; return -EFAULT;
if (!mtd->lock_user_prot_reg) if (!mtd->lock_user_prot_reg)
return -EOPNOTSUPP; return -EOPNOTSUPP;
ret = mtd->lock_user_prot_reg(mtd, oinfo.start, oinfo.length); ret = mtd_lock_user_prot_reg(mtd, oinfo.start, oinfo.length);
break; break;
} }
#endif #endif

2
drivers/mtd/mtdpart.c
View File

@@ -229,7 +229,7 @@ static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len) size_t len)
{ {
struct mtd_part *part = PART(mtd); struct mtd_part *part = PART(mtd);
return part->master->lock_user_prot_reg(part->master, from, len); return mtd_lock_user_prot_reg(part->master, from, len);
} }
static int part_writev(struct mtd_info *mtd, const struct kvec *vecs, static int part_writev(struct mtd_info *mtd, const struct kvec *vecs,

10
include/linux/mtd/mtd.h
View File

@@ -202,14 +202,14 @@ struct mtd_info {
size_t len, size_t *retlen, u_char *buf); size_t len, size_t *retlen, u_char *buf);
int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t to, size_t len, int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, u_char *buf); size_t *retlen, u_char *buf);
int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
size_t len);
/* Backing device capabilities for this device /* Backing device capabilities for this device
* - provides mmap capabilities * - provides mmap capabilities
*/ */
struct backing_dev_info *backing_dev_info; struct backing_dev_info *backing_dev_info;
int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len);
/* kvec-based read/write methods. /* kvec-based read/write methods.
NB: The 'count' parameter is the number of _vectors_, each of NB: The 'count' parameter is the number of _vectors_, each of
which contains an (ofs, len) tuple. which contains an (ofs, len) tuple.
@@ -369,6 +369,12 @@ static inline int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to,
return mtd->write_user_prot_reg(mtd, to, len, retlen, buf); return mtd->write_user_prot_reg(mtd, to, len, retlen, buf);
} }
static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len)
{
return mtd->lock_user_prot_reg(mtd, from, len);
}
static inline struct mtd_info *dev_to_mtd(struct device *dev) static inline struct mtd_info *dev_to_mtd(struct device *dev)
{ {
return dev ? dev_get_drvdata(dev) : NULL; return dev ? dev_get_drvdata(dev) : NULL;