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mtd: introduce mtd_read 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 17:30:16 +02:00
committed by David Woodhouse
parent 04c601bfa4
commit 329ad399a9
35 changed files with 152 additions and 135 deletions
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9
include/linux/mtd/mtd.h
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@@ -182,6 +182,8 @@ struct mtd_info {
unsigned long len,
unsigned long offset,
unsigned long flags);
int (*read) (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf);
/* Backing device capabilities for this device
* - provides mmap capabilities
@@ -189,7 +191,6 @@ struct mtd_info {
struct backing_dev_info *backing_dev_info;
int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
/* In blackbox flight recorder like scenarios we want to make successful
@@ -301,6 +302,12 @@ static inline unsigned long mtd_get_unmapped_area(struct mtd_info *mtd,
return mtd->get_unmapped_area(mtd, len, offset, flags);
}
static inline int mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
return mtd->read(mtd, from, len, retlen, buf);
}
static inline struct mtd_info *dev_to_mtd(struct device *dev)
{
return dev ? dev_get_drvdata(dev) : NULL;