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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2011-12-23 18:59:12 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-01-09 18:25:34 +0000
commitb0a31f7b2a668f00a8d0546dfeed65fac871b2da (patch)
tree7379a66d9bfd6ae067f090f1bebac5d47332f5cb
parent4403dbfb4541d34e5db33db709094d57d09f7467 (diff)
mtd: introduce mtd_writev interface
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
-rw-r--r--drivers/mtd/mtdconcat.c5
-rw-r--r--drivers/mtd/mtdpart.c4
-rw-r--r--fs/jffs2/writev.c2
-rw-r--r--include/linux/mtd/mtd.h18
4 files changed, 18 insertions, 11 deletions
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 3d9c1ffdbbbf..6fdae191e1ba 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -227,8 +227,9 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
if (!(subdev->flags & MTD_WRITEABLE))
err = -EROFS;
else
- err = subdev->writev(subdev, &vecs_copy[entry_low],
- entry_high - entry_low + 1, to, &retsize);
+ err = mtd_writev(subdev, &vecs_copy[entry_low],
+ entry_high - entry_low + 1, to,
+ &retsize);
vecs_copy[entry_high].iov_len = old_iov_len - size;
vecs_copy[entry_high].iov_base += size;
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 0bb16d6ed08a..c0bfa88c82f3 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -238,8 +238,8 @@ static int part_writev(struct mtd_info *mtd, const struct kvec *vecs,
struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
- return part->master->writev(part->master, vecs, count,
- to + part->offset, retlen);
+ return mtd_writev(part->master, vecs, count, to + part->offset,
+ retlen);
}
static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
diff --git a/fs/jffs2/writev.c b/fs/jffs2/writev.c
index b05710fd552a..d0ef068709ad 100644
--- a/fs/jffs2/writev.c
+++ b/fs/jffs2/writev.c
@@ -52,7 +52,7 @@ int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
}
if (c->mtd->writev)
- return c->mtd->writev(c->mtd, vecs, count, to, retlen);
+ return mtd_writev(c->mtd, vecs, count, to, retlen);
else {
return mtd_fake_writev(c->mtd, vecs, count, to, retlen);
}
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index b58e5e8746ec..4129cb5c3de4 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -204,18 +204,14 @@ struct mtd_info {
size_t *retlen, u_char *buf);
int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
size_t len);
+ int (*writev) (struct mtd_info *mtd, const struct kvec *vecs,
+ unsigned long count, loff_t to, size_t *retlen);
/* Backing device capabilities for this device
* - provides mmap capabilities
*/
struct backing_dev_info *backing_dev_info;
- /* kvec-based read/write methods.
- NB: The 'count' parameter is the number of _vectors_, each of
- which contains an (ofs, len) tuple.
- */
- int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen);
-
/* Sync */
void (*sync) (struct mtd_info *mtd);
@@ -375,6 +371,16 @@ static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
return mtd->lock_user_prot_reg(mtd, from, len);
}
+/*
+ * kvec-based read/write method. NB: The 'count' parameter is the number of
+ * _vectors_, each of which contains an (ofs, len) tuple.
+ */
+static inline int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
+ unsigned long count, loff_t to, size_t *retlen)
+{
+ return mtd->writev(mtd, vecs, count, to, retlen);
+}
+
static inline struct mtd_info *dev_to_mtd(struct device *dev)
{
return dev ? dev_get_drvdata(dev) : NULL;