From 52a82ce3dd901a1536c7d7d9d963e9c2d761c816 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 1 Nov 2018 17:57:55 +0100 Subject: 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 --- .../400-mtd-add-rootfs-split-support.patch | 108 +++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 target/linux/generic/pending-4.19/400-mtd-add-rootfs-split-support.patch (limited to 'target/linux/generic/pending-4.19/400-mtd-add-rootfs-split-support.patch') diff --git a/target/linux/generic/pending-4.19/400-mtd-add-rootfs-split-support.patch b/target/linux/generic/pending-4.19/400-mtd-add-rootfs-split-support.patch new file mode 100644 index 0000000000..5f8899ea61 --- /dev/null +++ b/target/linux/generic/pending-4.19/400-mtd-add-rootfs-split-support.patch @@ -0,0 +1,108 @@ +From: Felix Fietkau +Subject: make rootfs split/detection more generic - patch can be moved to generic-2.6 after testing on other platforms + +lede-commit: 328e660b31f0937d52c5ae3d6e7029409918a9df +Signed-off-by: Felix Fietkau +--- + drivers/mtd/Kconfig | 17 +++++++++++++++++ + drivers/mtd/mtdpart.c | 35 +++++++++++++++++++++++++++++++++++ + include/linux/mtd/partitions.h | 2 ++ + 3 files changed, 54 insertions(+) + +--- a/drivers/mtd/Kconfig ++++ b/drivers/mtd/Kconfig +@@ -12,6 +12,23 @@ menuconfig MTD + + if MTD + ++menu "OpenWrt specific MTD options" ++ ++config MTD_ROOTFS_ROOT_DEV ++ bool "Automatically set 'rootfs' partition to be root filesystem" ++ default y ++ ++config MTD_SPLIT_FIRMWARE ++ bool "Automatically split firmware partition for kernel+rootfs" ++ default y ++ ++config MTD_SPLIT_FIRMWARE_NAME ++ string "Firmware partition name" ++ depends on MTD_SPLIT_FIRMWARE ++ default "firmware" ++ ++endmenu ++ + config MTD_TESTS + tristate "MTD tests support (DANGEROUS)" + depends on m +--- a/drivers/mtd/mtdpart.c ++++ b/drivers/mtd/mtdpart.c +@@ -29,11 +29,13 @@ + #include + #include + #include ++#include + #include + #include + #include + + #include "mtdcore.h" ++#include "mtdsplit/mtdsplit.h" + + /* Our partition linked list */ + static LIST_HEAD(mtd_partitions); +@@ -53,6 +55,8 @@ struct mtd_part { + struct list_head list; + }; + ++static void mtd_partition_split(struct mtd_info *master, struct mtd_part *part); ++ + /* + * Given a pointer to the MTD object in the mtd_part structure, we can retrieve + * the pointer to that structure. +@@ -668,6 +672,7 @@ int mtd_add_partition(struct mtd_info *p + mutex_unlock(&mtd_partitions_mutex); + + add_mtd_device(&new->mtd); ++ mtd_partition_split(parent, new); + + mtd_add_partition_attrs(new); + +@@ -746,6 +751,29 @@ int mtd_del_partition(struct mtd_info *m + } + EXPORT_SYMBOL_GPL(mtd_del_partition); + ++#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME ++#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME ++#else ++#define SPLIT_FIRMWARE_NAME "unused" ++#endif ++ ++static void split_firmware(struct mtd_info *master, struct mtd_part *part) ++{ ++} ++ ++static void mtd_partition_split(struct mtd_info *master, struct mtd_part *part) ++{ ++ static int rootfs_found = 0; ++ ++ if (rootfs_found) ++ return; ++ ++ if (IS_ENABLED(CONFIG_MTD_SPLIT_FIRMWARE) && ++ !strcmp(part->mtd.name, SPLIT_FIRMWARE_NAME) && ++ !of_find_property(mtd_get_of_node(&part->mtd), "compatible", NULL)) ++ split_firmware(master, part); ++} ++ + /* + * This function, given a master MTD object and a partition table, creates + * and registers slave MTD objects which are bound to the master according to +@@ -777,6 +805,7 @@ int add_mtd_partitions(struct mtd_info * + mutex_unlock(&mtd_partitions_mutex); + + add_mtd_device(&slave->mtd); ++ mtd_partition_split(master, slave); + mtd_add_partition_attrs(slave); + /* Look for subpartitions */ + parse_mtd_partitions(&slave->mtd, parts[i].types, NULL); -- cgit v1.2.3