fs: introduce f_op->mmap_capabilities for nommu mmap support

[firefly-linux-kernel-4.4.55.git] / drivers / mtd / mtdconcat.c

diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index b9000563b9f4311d63ffdfe66ba5166eb158b482..eacc3aac732789085b1bbfc86531c6fa5b0dbe17 100644 (file)
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -732,8 +732,6 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],       /* subdevices to c
 
        concat->mtd.ecc_stats.badblocks = subdev[0]->ecc_stats.badblocks;
 
-       concat->mtd.backing_dev_info = subdev[0]->backing_dev_info;
-
        concat->subdev[0] = subdev[0];
 
        for (i = 1; i < num_devs; i++) {
@@ -761,14 +759,6 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],      /* subdevices to c
                                    subdev[i]->flags & MTD_WRITEABLE;
                }
 
-               /* only permit direct mapping if the BDIs are all the same
-                * - copy-mapping is still permitted
-                */
-               if (concat->mtd.backing_dev_info !=
-                   subdev[i]->backing_dev_info)
-                       concat->mtd.backing_dev_info =
-                               &default_backing_dev_info;
-
                concat->mtd.size += subdev[i]->size;
                concat->mtd.ecc_stats.badblocks +=
                        subdev[i]->ecc_stats.badblocks;