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mtd: Delete partitions attached to the device when a device is deleted

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If we don't do that, partitions might still be exposed while the
underlying device is gone.

Fixes: 2a74930da5 ("mtd: mtdpart: implement proper partition handling")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Boris Brezillon 2018-12-02 10:54:24 +01:00 committed by Jagan Teki
parent 779c9c0565
commit a02820fca9
2 changed files with 22 additions and 0 deletions
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7
drivers/mtd/mtdcore.c
View file

@ -528,6 +528,13 @@ int del_mtd_device(struct mtd_info *mtd)
struct mtd_notifier *not;
#endif
ret = del_mtd_partitions(mtd);
if (ret) {
debug("Failed to delete MTD partitions attached to %s (err %d)\n",
mtd->name, ret);
return ret;
}
mutex_lock(&mtd_table_mutex);
if (idr_find(&mtd_idr, mtd->index) != mtd) {

15
include/linux/mtd/mtd.h
View file

@ -562,8 +562,23 @@ unsigned mtd_mmap_capabilities(struct mtd_info *mtd);
/* drivers/mtd/mtdcore.h */
int add_mtd_device(struct mtd_info *mtd);
int del_mtd_device(struct mtd_info *mtd);
#ifdef CONFIG_MTD_PARTITIONS
int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
int del_mtd_partitions(struct mtd_info *);
#else
static inline int add_mtd_partitions(struct mtd_info *mtd,
const struct mtd_partition *parts,
int nparts)
{
return 0;
}
static inline int del_mtd_partitions(struct mtd_info *mtd)
{
return 0;
}
#endif
struct mtd_info *__mtd_next_device(int i);
#define mtd_for_each_device(mtd) \