diff options
Diffstat (limited to 'drivers/mtd/chips/map_rom.c')
| -rw-r--r-- | drivers/mtd/chips/map_rom.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/mtd/chips/map_rom.c b/drivers/mtd/chips/map_rom.c index e67f73ab44c9..20e3604b4d71 100644 --- a/drivers/mtd/chips/map_rom.c +++ b/drivers/mtd/chips/map_rom.c @@ -20,8 +20,10 @@ static int maprom_write (struct mtd_info *, loff_t, size_t, size_t *, const u_ch static void maprom_nop (struct mtd_info *); static struct mtd_info *map_rom_probe(struct map_info *map); static int maprom_erase (struct mtd_info *mtd, struct erase_info *info); -static unsigned long maprom_unmapped_area(struct mtd_info *, unsigned long, - unsigned long, unsigned long); +static int maprom_point (struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, void **virt, resource_size_t *phys); +static int maprom_unpoint(struct mtd_info *mtd, loff_t from, size_t len); + static struct mtd_chip_driver maprom_chipdrv = { .probe = map_rom_probe, @@ -51,7 +53,8 @@ static struct mtd_info *map_rom_probe(struct map_info *map) mtd->name = map->name; mtd->type = MTD_ROM; mtd->size = map->size; - mtd->_get_unmapped_area = maprom_unmapped_area; + mtd->_point = maprom_point; + mtd->_unpoint = maprom_unpoint; mtd->_read = maprom_read; mtd->_write = maprom_write; mtd->_sync = maprom_nop; @@ -66,18 +69,23 @@ static struct mtd_info *map_rom_probe(struct map_info *map) } -/* - * Allow NOMMU mmap() to directly map the device (if not NULL) - * - return the address to which the offset maps - * - return -ENOSYS to indicate refusal to do the mapping - */ -static unsigned long maprom_unmapped_area(struct mtd_info *mtd, - unsigned long len, - unsigned long offset, - unsigned long flags) +static int maprom_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; - return (unsigned long) map->virt + offset; + + if (!map->virt) + return -EINVAL; + *virt = map->virt + from; + if (phys) + *phys = map->phys + from; + *retlen = len; + return 0; +} + +static int maprom_unpoint(struct mtd_info *mtd, loff_t from, size_t len) +{ + return 0; } static int maprom_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) |