jffs2: do not support the MLC nand

We should not support the MLC nand for jffs2. So if the nand type is
MLC, we quit immediatly.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index fe3c0527545f..09b3ed455724 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -515,6 +515,10 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
 
         c = JFFS2_SB_INFO(sb);
 
+        /* Do not support the MLC nand */
+        if (c->mtd->type == MTD_MLCNANDFLASH)
+                return -EINVAL;
+
 #ifndef CONFIG_JFFS2_FS_WRITEBUFFER
         if (c->mtd->type == MTD_NANDFLASH) {
                 pr_err("Cannot operate on NAND flash unless jffs2 NAND support is compiled in\n");