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path: root/drivers/mtd/ubi/eba.c
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Diffstat (limited to 'drivers/mtd/ubi/eba.c')
-rw-r--r--drivers/mtd/ubi/eba.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index d56ae1cf65e6..0e11671dadc4 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -340,7 +340,9 @@ int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
dbg_eba("erase LEB %d:%d, PEB %d", vol_id, lnum, pnum);
+ down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = UBI_LEB_UNMAPPED;
+ up_read(&ubi->fm_sem);
err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 0);
out_unlock:
@@ -548,7 +550,9 @@ retry:
mutex_unlock(&ubi->buf_mutex);
ubi_free_vid_hdr(ubi, vid_hdr);
+ down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = new_pnum;
+ up_read(&ubi->fm_sem);
ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
ubi_msg("data was successfully recovered");
@@ -665,7 +669,9 @@ retry:
}
}
+ down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum;
+ up_read(&ubi->fm_sem);
leb_write_unlock(ubi, vol_id, lnum);
ubi_free_vid_hdr(ubi, vid_hdr);
@@ -783,7 +789,9 @@ retry:
}
ubi_assert(vol->eba_tbl[lnum] < 0);
+ down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum;
+ up_read(&ubi->fm_sem);
leb_write_unlock(ubi, vol_id, lnum);
ubi_free_vid_hdr(ubi, vid_hdr);
@@ -904,7 +912,9 @@ retry:
goto out_leb_unlock;
}
+ down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum;
+ up_read(&ubi->fm_sem);
out_leb_unlock:
leb_write_unlock(ubi, vol_id, lnum);
@@ -1151,7 +1161,9 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
}
ubi_assert(vol->eba_tbl[lnum] == from);
+ down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = to;
+ up_read(&ubi->fm_sem);
out_unlock_buf:
mutex_unlock(&ubi->buf_mutex);