diff options
| -rw-r--r-- | drivers/mtd/ubi/vmt.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c index a0c6e1e6d46..d62dac90e10 100644 --- a/drivers/mtd/ubi/vmt.c +++ b/drivers/mtd/ubi/vmt.c @@ -644,21 +644,33 @@ void ubi_free_volume(struct ubi_device *ubi, int vol_id) * @ubi: UBI device description object * @vol_id: volume ID */ -static void paranoid_check_volume(const struct ubi_device *ubi, int vol_id) +static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) { int idx = vol_id2idx(ubi, vol_id); int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker; - const struct ubi_volume *vol = ubi->volumes[idx]; + const struct ubi_volume *vol; long long n; const char *name; + spin_lock(&ubi->volumes_lock); reserved_pebs = be32_to_cpu(ubi->vtbl[vol_id].reserved_pebs); + vol = ubi->volumes[idx]; if (!vol) { if (reserved_pebs) { ubi_err("no volume info, but volume exists"); goto fail; } + spin_unlock(&ubi->volumes_lock); + return; + } + + if (vol->exclusive) { + /* + * The volume may be being created at the moment, do not check + * it (e.g., it may be in the middle of ubi_create_volume(). + */ + spin_unlock(&ubi->volumes_lock); return; } @@ -783,12 +795,14 @@ static void paranoid_check_volume(const struct ubi_device *ubi, int vol_id) goto fail; } + spin_unlock(&ubi->volumes_lock); return; fail: ubi_err("paranoid check failed for volume %d", vol_id); ubi_dbg_dump_vol_info(vol); ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id); + spin_unlock(&ubi->volumes_lock); BUG(); } @@ -801,10 +815,8 @@ static void paranoid_check_volumes(struct ubi_device *ubi) int i; mutex_lock(&ubi->vtbl_mutex); - spin_lock(&ubi->volumes_lock); for (i = 0; i < ubi->vtbl_slots; i++) paranoid_check_volume(ubi, i); - spin_unlock(&ubi->volumes_lock); mutex_unlock(&ubi->vtbl_mutex); } #endif |