From 399a9feeac83c2f64138c438e41222a12dd71766 Mon Sep 17 00:00:00 2001
From: Richard Weinberger <richard@nod.at>
Date: Fri, 26 Sep 2014 23:08:15 +0200
Subject: [PATCH] UBI: Fastmap: Ensure that all fastmap work is done upon WL
 shutdown
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...otherwise the deferred work might run after datastructures
got freed and corrupt memory.

Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Guido Martínez <guido@vanguardiasur.com.ar>
---
 drivers/mtd/ubi/wl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index ae174f4ed674..bf66890fefad 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1856,6 +1856,9 @@ int ubi_thread(void *u)
  */
 static void shutdown_work(struct ubi_device *ubi)
 {
+#ifdef CONFIG_MTD_UBI_FASTMAP
+	flush_work(&ubi->fm_work);
+#endif
 	while (!list_empty(&ubi->works)) {
 		struct ubi_work *wrk;
 
-- 
2.11.0