From d72158c045eacf5022b052bdc56a32bc98c89034 Mon Sep 17 00:00:00 2001
From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Date: Fri, 17 Mar 2017 16:12:30 +0800
Subject: mtd: nand: add initialization flag

Add initialization flag to avoid initializing NAND Flash multiple
times, otherwise it will calculate a wrong total size.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

diff --git a/drivers/mtd/nand/nand.c b/drivers/mtd/nand/nand.c
index 0551241..3ea2dcf 100644
--- a/drivers/mtd/nand/nand.c
+++ b/drivers/mtd/nand/nand.c
@@ -133,6 +133,16 @@ static void create_mtd_concat(void)
 
 void nand_init(void)
 {
+	static int initialized;
+
+	/*
+	 * Avoid initializing NAND Flash multiple times,
+	 * otherwise it will calculate a wrong total size.
+	 */
+	if (initialized)
+		return;
+	initialized = 1;
+
 #ifdef CONFIG_SYS_NAND_SELF_INIT
 	board_nand_init();
 #else
-- 
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