kernel: add linux 4.4 support

[openwrt.git] / target / linux / generic / patches-4.4 / 480-mtd-set-rootfs-to-be-root-dev.patch

diff --git a/target/linux/generic/patches-4.4/480-mtd-set-rootfs-to-be-root-dev.patch b/target/linux/generic/patches-4.4/480-mtd-set-rootfs-to-be-root-dev.patch
new file mode 100644 (file)
index 0000000..b565b52
--- /dev/null
+++ b/target/linux/generic/patches-4.4/480-mtd-set-rootfs-to-be-root-dev.patch
@@ -0,0 +1,26 @@
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -39,6 +39,7 @@
+ #include <linux/slab.h>
+ #include <linux/reboot.h>
+ #include <linux/kconfig.h>
++#include <linux/root_dev.h>
+ 
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+@@ -473,6 +474,15 @@ int add_mtd_device(struct mtd_info *mtd)
+          of this try_ nonsense, and no bitching about it
+          either. :) */
+       __module_get(THIS_MODULE);
++
++      if (!strcmp(mtd->name, "rootfs") &&
++          config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
++          ROOT_DEV == 0) {
++              pr_notice("mtd: device %d (%s) set to be root filesystem\n",
++                        mtd->index, mtd->name);
++              ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
++      }
++
+       return 0;
+ 
+ fail_added: