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 <[email protected]>
Reviewed-by: York Sun <[email protected]>

diff --git a/drivers/mtd/nand/nand.c b/drivers/mtd/nand/nand.c
index 05512412b9404a886f5c4457ea43527c16d909aa..3ea2dcfb7378bd30fe8955d083737e96d27bcb27 100644 (file)
--- 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