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-rw-r--r--drivers/mtd/ubi/eba.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 180eb006e966..32045dd3d1db 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -312,6 +312,18 @@ static void leb_write_unlock(struct ubi_device *ubi, int vol_id, int lnum)
}
/**
+ * ubi_eba_is_mapped - check if a LEB is mapped.
+ * @vol: volume description object
+ * @lnum: logical eraseblock number
+ *
+ * This function returns true if the LEB is mapped, false otherwise.
+ */
+bool ubi_eba_is_mapped(struct ubi_volume *vol, int lnum)
+{
+ return vol->eba_tbl[lnum] >= 0;
+}
+
+/**
* ubi_eba_unmap_leb - un-map logical eraseblock.
* @ubi: UBI device description object
* @vol: volume description object
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