From: Richard Weinberger <richard@xxxxxx>
When Fastmap is used we can face here an -EBADMSG
since Fastmap cannot know about unmaps.
If the erasure was interrupted the PEB may show ECC
errors and UBI would go to ro-mode as it assumes
that the PEB was check during attach time, which is
not the case with Fastmap.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: dbb7d2a88d ("UBI: Add fastmap core")
Signed-off-by: Richard Weinberger <richard@xxxxxx>
[Fix conflict]
Signed-off-by: Teresa Remmet <t.remmet@xxxxxxxxx>
---
drivers/mtd/ubi/wl.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 32cea29e8827..764e8dddc2b5 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -618,7 +618,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
int shutdown)
{
int err, scrubbing = 0, torture = 0, protect = 0, erroneous = 0;
- int vol_id = -1, lnum = -1;
+ int erase = 0, keep = 0, vol_id = -1, lnum = -1;
#ifdef CONFIG_MTD_UBI_FASTMAP
int anchor = wrk->anchor;
#endif
@@ -754,6 +754,16 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
e1->pnum);
scrubbing = 1;
goto out_not_moved;
+ } else if (ubi->fast_attach && err == UBI_IO_BAD_HDR_EBADMSG) {
+ /*
+ * While a full scan would detect interrupted erasures
+ * at attach time we can face them here when attached from
+ * Fastmap.
+ */
+ dbg_wl("PEB %d has ECC errors, maybe from an interrupted erasure",
+ e1->pnum);
+ erase = 1;
+ goto out_not_moved;
}
ubi_err(ubi, "error %d while reading VID header from PEB %d",
@@ -789,6 +799,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
* Target PEB had bit-flips or write error - torture it.
*/
torture = 1;
+ keep = 1;
goto out_not_moved;
}
@@ -871,7 +882,7 @@ out_not_moved:
ubi->erroneous_peb_count += 1;
} else if (scrubbing)
wl_tree_add(e1, &ubi->scrub);
- else
+ else if (keep)
wl_tree_add(e1, &ubi->used);
if (dst_leb_clean) {
wl_tree_add(e2, &ubi->free);
@@ -891,6 +902,12 @@ out_not_moved:
goto out_ro;
}
+ if (erase) {
+ err = do_sync_erase(ubi, e1, vol_id, lnum, 1);
+ if (err)
+ goto out_ro;
+ }
+
return 0;
out_error:
--
2.7.4
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
