linux-kernel - [PATCH 3/6] UBI: Fastmap: Notify user in case of an ubi_update

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Date:	Sun, 30 Nov 2014 12:35:37 +0100
From:	Richard Weinberger <richard@....at>
To:	dedekind1@...il.com
Cc:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Richard Weinberger <richard@....at>
Subject: [PATCH 3/6] UBI: Fastmap: Notify user in case of an ubi_update_fastmap() failure

If ubi_update_fastmap() fails notify the user.
This is not a hard error as ubi_update_fastmap() makes sure that upon failure
the current on-flash fastmap will no be used upon next UBI attach.

Signed-off-by: Richard Weinberger <richard@....at>
---
 drivers/mtd/ubi/wl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 523d8a4..7821342 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -657,7 +657,11 @@ again:
 	 * refill the WL pool synchronous. */
 	if (pool->used == pool->size || wl_pool->used == wl_pool->size) {
 		spin_unlock(&ubi->wl_lock);
-		ubi_update_fastmap(ubi);
+		ret = ubi_update_fastmap(ubi);
+		if (ret) {
+			ubi_msg(ubi, "Unable to write a new fastmap: %i", ret);
+			return -ENOSPC;
+		}
 		spin_lock(&ubi->wl_lock);
 	}
 
-- 
1.8.4.5

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