linux-kernel - [PATCH 02/11] UBI: Fastmap: Amend self_check

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Message-Id: <1340982869-77042-3-git-send-email-richard@nod.at>
Date:	Fri, 29 Jun 2012 17:14:20 +0200
From:	Richard Weinberger <richard@....at>
To:	linux-mtd@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, adrian.hunter@...el.com,
	Heinz.Egger@...utronix.de, thomas.wucher@...utronix.de,
	shmulik.ladkani@...il.com, tglx@...utronix.de,
	tim.bird@...sony.com, Marius.Mazarel@...l.ro,
	artem.bityutskiy@...ux.intel.com, nyoushchenko@...sta.com,
	Richard Weinberger <richard@....at>
Subject: [PATCH 02/11] UBI: Fastmap: Amend self_check_eba()

Don't BUG() on error and document return values.

Signed-off-by: Richard Weinberger <richard@....at>
---
 drivers/mtd/ubi/attach.c |    5 ++++-
 drivers/mtd/ubi/eba.c    |    7 ++++---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index bd3a8f5..f1dfb63 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -1333,8 +1333,11 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
 			goto out_wl;
 		}
 
-		self_check_eba(ubi, ai, scan_ai);
+		err = self_check_eba(ubi, ai, scan_ai);
 		destroy_ai(ubi, scan_ai);
+
+		if (err)
+			goto out_wl;
 	}
 
 	destroy_ai(ubi, ai);
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 6d6e301..4fb80d0 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -1223,7 +1223,9 @@ static void print_rsvd_warning(struct ubi_device *ubi,
  * @ai_fastmap: UBI attach info object created by fastmap
  * @ai_scan: UBI attach info object created by scanning
  *
- * TODO: what we do and what return.
+ * Returns < 0 in case of an internal error, 0 otherwise.
+ * If a bad EBA table entry was found it will be printed out and
+ * ubi_assert() triggers.
  */
 int self_check_eba(struct ubi_device *ubi, struct ubi_attach_info *ai_fastmap,
 		   struct ubi_attach_info *ai_scan)
@@ -1291,8 +1293,7 @@ int self_check_eba(struct ubi_device *ubi, struct ubi_attach_info *ai_fastmap,
 
 				ubi_err("LEB:%i:%i is PEB:%i instead of %i!",
 					vol->vol_id, i, fm_eba[i][j], scan_eba[i][j]);
-				/* TODO: no, please, return error instead */
-				BUG();
+				ubi_assert(0);
 			}
 		}
 	}
-- 
1.7.6.5

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