diff options
Diffstat (limited to 'drivers/mtd/mtdcore.c')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index f3c94006ffe6..9af103bf9218 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -38,6 +38,7 @@ #include <linux/gfp.h> #include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> #include "mtdcore.h" /* @@ -428,6 +429,50 @@ out_error: } /** + * mtd_device_register - register an MTD device. + * + * @master: the MTD device to register + * @parts: the partitions to register - only valid if nr_parts > 0 + * @nr_parts: the number of partitions in parts. If zero then the full MTD + * device is registered + * + * Register an MTD device with the system and optionally, a number of + * partitions. If nr_parts is 0 then the whole device is registered, otherwise + * only the partitions are registered. To register both the full device *and* + * the partitions, call mtd_device_register() twice, once with nr_parts == 0 + * and once equal to the number of partitions. + */ +int mtd_device_register(struct mtd_info *master, + const struct mtd_partition *parts, + int nr_parts) +{ + return parts ? add_mtd_partitions(master, parts, nr_parts) : + add_mtd_device(master); +} +EXPORT_SYMBOL_GPL(mtd_device_register); + +/** + * mtd_device_unregister - unregister an existing MTD device. + * + * @master: the MTD device to unregister. This will unregister both the master + * and any partitions if registered. + */ +int mtd_device_unregister(struct mtd_info *master) +{ + int err; + + err = del_mtd_partitions(master); + if (err) + return err; + + if (!device_is_registered(&master->dev)) + return 0; + + return del_mtd_device(master); +} +EXPORT_SYMBOL_GPL(mtd_device_unregister); + +/** * register_mtd_user - register a 'user' of MTD devices. * @new: pointer to notifier info structure * |