UBI: Fastmap: Fall back to scanning mode after ECC error

If we encounter an uncorrectable ECC error while scanning for the fastmap
UBI must not fail hard. Instead fall back to scanning mode.

Reported-by: Alexander Block <Alexander.Block@continental-corporation.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index 42d465add3859101d12548e139b9642b2094dded..68eea5befaf12c96db4063a32ab81c20a8abfd96 100644 (file)
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -1419,7 +1419,7 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
                err = scan_all(ubi, ai, 0);
        else {
                err = scan_fast(ubi, &ai);
-               if (err > 0) {
+               if (err > 0 || mtd_is_eccerr(err)) {
                        if (err != UBI_NO_FASTMAP) {
                                destroy_ai(ai);
                                ai = alloc_ai();