1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c
index afb43d5e1782..c3939dd230c6 100644
--- a/drivers/mtd/chips/map_ram.c
+++ b/drivers/mtd/chips/map_ram.c
@@ -22,6 +22,9 @@ static void mapram_nop (struct mtd_info *);
 static struct mtd_info *map_ram_probe(struct map_info *map);
 static unsigned long mapram_unmapped_area(struct mtd_info *, unsigned long,
                                           unsigned long, unsigned long);
+static int mapram_point (struct mtd_info *mtd, loff_t from, size_t len,
+                         size_t *retlen, void **virt, resource_size_t *phys);
+static int mapram_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
 
 
 static struct mtd_chip_driver mapram_chipdrv = {
@@ -69,7 +72,9 @@ static struct mtd_info *map_ram_probe(struct map_info *map)
         mtd->_read = mapram_read;
         mtd->_write = mapram_write;
         mtd->_panic_write = mapram_write;
+        mtd->_point = mapram_point;
         mtd->_sync = mapram_nop;
+        mtd->_unpoint = mapram_unpoint;
         mtd->flags = MTD_CAP_RAM;
         mtd->writesize = 1;
 
@@ -96,6 +101,25 @@ static unsigned long mapram_unmapped_area(struct mtd_info *mtd,
         return (unsigned long) map->virt + offset;
 }
 
+static int mapram_point(struct mtd_info *mtd, loff_t from, size_t len,
+                        size_t *retlen, void **virt, resource_size_t *phys)
+{
+        struct map_info *map = mtd->priv;
+
+        if (!map->virt)
+                return -EINVAL;
+        *virt = map->virt + from;
+        if (phys)
+                *phys = map->phys + from;
+        *retlen = len;
+        return 0;
+}
+
+static int mapram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+{
+        return 0;
+}
+
 static int mapram_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
 {
         struct map_info *map = mtd->priv;