[PATCH 4.19 162/195] ubi: fastmap: Fix inverted logic in seen selfcheck

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From: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>

commit ef5aafb6e4e9942a28cd300bdcda21ce6cbaf045 upstream.

set_seen() sets the bit corresponding to the PEB number in the bitmap,
so when self_check_seen() wants to find PEBs that haven't been seen we
have to print the PEBs that have their bit cleared, not the ones which
have it set.

Fixes: 5d71afb00840 ("ubi: Use bitmaps in Fastmap self-check code")
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/mtd/ubi/fastmap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -73,7 +73,7 @@ static int self_check_seen(struct ubi_de
 		return 0;
 
 	for (pnum = 0; pnum < ubi->peb_count; pnum++) {
-		if (test_bit(pnum, seen) && ubi->lookuptbl[pnum]) {
+		if (!test_bit(pnum, seen) && ubi->lookuptbl[pnum]) {
 			ubi_err(ubi, "self-check failed for PEB %d, fastmap didn't see it", pnum);
 			ret = -EINVAL;
 		}





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