mtd: return error code from mtd_unpoint

[linux-2.6-block.git] / drivers / mtd / lpddr / lpddr_cmds.c

diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c
index fd19d3b1ee906b7451fe1627b0fcd589822e69af..de960b1d395af73dbbb560c219051056fe590735 100644 (file)
--- a/drivers/mtd/lpddr/lpddr_cmds.c
+++ b/drivers/mtd/lpddr/lpddr_cmds.c
@@ -40,7 +40,7 @@ static int lpddr_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 static int lpddr_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
                        size_t *retlen, void **mtdbuf, resource_size_t *phys);
-static void lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
+static int lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
 static int get_chip(struct map_info *map, struct flchip *chip, int mode);
 static int chip_ready(struct map_info *map, struct flchip *chip, int mode);
 static void put_chip(struct map_info *map, struct flchip *chip);
@@ -575,11 +575,11 @@ static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
        return 0;
 }
 
-static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
+static int lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
 {
        struct map_info *map = mtd->priv;
        struct lpddr_private *lpddr = map->fldrv_priv;
-       int chipnum = adr >> lpddr->chipshift;
+       int chipnum = adr >> lpddr->chipshift, err = 0;
        unsigned long ofs;
 
        /* ofs: offset within the first chip that the first read should start */
@@ -603,9 +603,11 @@ static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
                        chip->ref_point_counter--;
                        if (chip->ref_point_counter == 0)
                                chip->state = FL_READY;
-               } else
+               } else {
                        printk(KERN_WARNING "%s: Warning: unpoint called on non"
                                        "pointed region\n", map->name);
+                       err = -EINVAL;
+               }
 
                put_chip(map, chip);
                mutex_unlock(&chip->mutex);
@@ -614,6 +616,8 @@ static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
                ofs = 0;
                chipnum++;
        }
+
+       return err;
 }
 
 static int lpddr_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,