UBI: Call scan_all() with correct offset in error case

If we find an invalid fastmap we have to scan from the very beginning.
Otherwise we leak the first 64 PEBs.

Reported-and-tested-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index c071d410488f..03b32b05ab15 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -1417,9 +1417,11 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
                                 ai = alloc_ai("ubi_aeb_slab_cache2");
                                 if (!ai)
                                         return -ENOMEM;
-                        }
 
-                        err = scan_all(ubi, ai, UBI_FM_MAX_START);
+                                err = scan_all(ubi, ai, 0);
+                        } else {
+                                err = scan_all(ubi, ai, UBI_FM_MAX_START);
+                        }
                 }
         }
 #else