linux-kernel - [PATCH] UBI: Fastmap: Fall back to scanning mode after ECC error

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Message-Id: <1427402596-28081-1-git-send-email-richard@nod.at>
Date:	Thu, 26 Mar 2015 21:43:16 +0100
From:	Richard Weinberger <richard@....at>
To:	linux-mtd@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, Richard Weinberger <richard@....at>
Subject: [PATCH] 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@...tinental-corporation.com>
Signed-off-by: Richard Weinberger <richard@....at>
---
 drivers/mtd/ubi/attach.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index 9bc70eb..c1039d9 100644
--- 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();
-- 
1.8.4.5

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