UBI: tweak volumes locking

Transform vtbl_mutex to volumes_mutex - this just makes code
easier to understand.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
index a95dcaa4a0c2..e32b04d2e048 100644
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -67,7 +67,9 @@ static int set_update_marker(struct ubi_device *ubi, int vol_id)
         memcpy(&vtbl_rec, &ubi->vtbl[vol_id], sizeof(struct ubi_vtbl_record));
         vtbl_rec.upd_marker = 1;
 
+        mutex_lock(&ubi->volumes_mutex);
         err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
+        mutex_unlock(&ubi->volumes_mutex);
         vol->upd_marker = 1;
         return err;
 }
@@ -106,7 +108,9 @@ static int clear_update_marker(struct ubi_device *ubi, int vol_id, long long byt
                         vol->last_eb_bytes = vol->usable_leb_size;
         }
 
+        mutex_lock(&ubi->volumes_mutex);
         err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
+        mutex_unlock(&ubi->volumes_mutex);
         vol->upd_marker = 0;
         return err;
 }