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-rw-r--r--drivers/mtd/ubi/build.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 12c02342149c..e85b04e9716b 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -867,8 +867,11 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
* Both UBI and UBIFS have been designed for SLC NAND and NOR flashes.
* MLC NAND is different and needs special care, otherwise UBI or UBIFS
* will die soon and you will lose all your data.
+ * Relax this rule if the partition we're attaching to operates in SLC
+ * mode.
*/
- if (mtd->type == MTD_MLCNANDFLASH) {
+ if (mtd->type == MTD_MLCNANDFLASH &&
+ !(mtd->flags & MTD_SLC_ON_MLC_EMULATION)) {
pr_err("ubi: refuse attaching mtd%d - MLC NAND is not supported\n",
mtd->index);
return -EINVAL;