mtd: introduce mtd_read interface

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index f38e8276b40..56478eb4bbc 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -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;