diff options
Diffstat (limited to 'drivers/mtd/mtdcore.c')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 76fe0a1e7a5e..65a7f3703881 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -19,6 +19,7 @@ #include <linux/proc_fs.h> #include <linux/mtd/mtd.h> +#include "internal.h" #include "mtdcore.h" @@ -46,6 +47,20 @@ int add_mtd_device(struct mtd_info *mtd) { int i; + if (!mtd->backing_dev_info) { + switch (mtd->type) { + case MTD_RAM: + mtd->backing_dev_info = &mtd_bdi_rw_mappable; + break; + case MTD_ROM: + mtd->backing_dev_info = &mtd_bdi_ro_mappable; + break; + default: + mtd->backing_dev_info = &mtd_bdi_unmappable; + break; + } + } + BUG_ON(mtd->writesize == 0); mutex_lock(&mtd_table_mutex); |