kernel: split patches folder up into backport, pending and hack folders

[openwrt/openwrt.git] / target / linux / generic / pending-4.9 / 480-mtd-set-rootfs-to-be-root-dev.patch

diff --git a/target/linux/generic/pending-4.9/480-mtd-set-rootfs-to-be-root-dev.patch b/target/linux/generic/pending-4.9/480-mtd-set-rootfs-to-be-root-dev.patch
new file mode 100644 (file)
index 0000000..62cf4eb
--- /dev/null
+++ b/target/linux/generic/pending-4.9/480-mtd-set-rootfs-to-be-root-dev.patch
@@ -0,0 +1,43 @@
+From: Gabor Juhos <juhosg@openwrt.org>
+Subject: kernel/3.1[02]: move MTD root device setup code to mtdcore
+
+The current code only allows to automatically set
+root device on MTD partitions. Move the code to MTD
+core to allow to use it with all MTD devices.
+
+Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+---
+ drivers/mtd/mtdcore.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
+index d46e4adf6d2b..4d62d898dadc 100644
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -40,6 +40,7 @@
+ #include <linux/slab.h>
+ #include <linux/reboot.h>
+ #include <linux/leds.h>
++#include <linux/root_dev.h>
+ 
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+@@ -570,6 +571,15 @@ 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") &&
++          IS_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:
+-- 
+2.11.0
+