--- /dev/null
+--- a/drivers/mtd/devices/block2mtd.c
++++ b/drivers/mtd/devices/block2mtd.c
+@@ -268,6 +268,7 @@
+ /* We might not have rootfs mounted at this point. Try
+ to resolve the device name by other means. */
+
++ wait_for_device_probe();
+ dev_t devt = name_to_dev_t(dev->devname);
+ if (devt) {
+ bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ);
--- /dev/null
+--- a/drivers/mtd/devices/block2mtd.c
++++ b/drivers/mtd/devices/block2mtd.c
+@@ -268,6 +268,7 @@
+ /* We might not have rootfs mounted at this point. Try
+ to resolve the device name by other means. */
+
++ wait_for_device_probe();
+ dev_t devt = name_to_dev_t(dev->devname);
+ if (devt) {
+ bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ);