kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 66 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.19/491-ubi-auto-create-ubiblock-device-for-rootfs.patch b/target/linux/generic/pending-4.19/491-ubi-auto-create-ubiblock-device-for-rootfs.patch
new file mode 100644
index 0000000000..cb2d525610
--- /dev/null
+++ b/target/linux/generic/pending-4.19/491-ubi-auto-create-ubiblock-device-for-rootfs.patch
@@ -0,0 +1,66 @@
+From: Daniel Golle <daniel@makrotopia.org>
+Subject: ubi: auto-create ubiblock device for rootfs
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ drivers/mtd/ubi/block.c | 42 ++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 42 insertions(+)
+
+--- a/drivers/mtd/ubi/block.c
++++ b/drivers/mtd/ubi/block.c
+@@ -633,6 +633,44 @@ static void __init ubiblock_create_from_
+ 	}
+ }
+ 
++#define UBIFS_NODE_MAGIC  0x06101831
++static inline int ubi_vol_is_ubifs(struct ubi_volume_desc *desc)
++{
++	int ret;
++	uint32_t magic_of, magic;
++	ret = ubi_read(desc, 0, (char *)&magic_of, 0, 4);
++	if (ret)
++		return 0;
++	magic = le32_to_cpu(magic_of);
++	return magic == UBIFS_NODE_MAGIC;
++}
++
++static void __init ubiblock_create_auto_rootfs(void)
++{
++	int ubi_num, ret, is_ubifs;
++	struct ubi_volume_desc *desc;
++	struct ubi_volume_info vi;
++
++	for (ubi_num = 0; ubi_num < UBI_MAX_DEVICES; ubi_num++) {
++		desc = ubi_open_volume_nm(ubi_num, "rootfs", UBI_READONLY);
++		if (IS_ERR(desc))
++			continue;
++
++		ubi_get_volume_info(desc, &vi);
++		is_ubifs = ubi_vol_is_ubifs(desc);
++		ubi_close_volume(desc);
++		if (is_ubifs)
++			break;
++
++		ret = ubiblock_create(&vi);
++		if (ret)
++			pr_err("UBI error: block: can't add '%s' volume, err=%d\n",
++				vi.name, ret);
++		/* always break if we get here */
++		break;
++	}
++}
++
+ static void ubiblock_remove_all(void)
+ {
+ 	struct ubiblock *next;
+@@ -665,6 +703,10 @@ int __init ubiblock_init(void)
+ 	 */
+ 	ubiblock_create_from_param();
+ 
++	/* auto-attach "rootfs" volume if existing and non-ubifs */
++	if (IS_ENABLED(CONFIG_MTD_ROOTFS_ROOT_DEV))
++		ubiblock_create_auto_rootfs();
++
+ 	/*
+ 	 * Block devices are only created upon user requests, so we ignore
+ 	 * existing volumes.