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@nod.at>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 11e0d7523d14..b9b7f97db837 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -654,7 +654,11 @@ 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);
         }