From c16517d26de30c90dabce1e456615fd7fbdce07c Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 23 Feb 2020 13:20:11 +0100 Subject: kernel: copy kernel 4.19 code to 5.4 No changes were done to the patches while coping them. Currently they do not apply on top of kernel 5.4. Signed-off-by: Hauke Mehrtens --- .../404-mtd-add-more-helper-functions.patch | 76 ++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 target/linux/generic/pending-5.4/404-mtd-add-more-helper-functions.patch (limited to 'target/linux/generic/pending-5.4/404-mtd-add-more-helper-functions.patch') diff --git a/target/linux/generic/pending-5.4/404-mtd-add-more-helper-functions.patch b/target/linux/generic/pending-5.4/404-mtd-add-more-helper-functions.patch new file mode 100644 index 0000000000..e404ec1fb2 --- /dev/null +++ b/target/linux/generic/pending-5.4/404-mtd-add-more-helper-functions.patch @@ -0,0 +1,76 @@ +From: Gabor Juhos +Subject: kernel/3.10: add separate rootfs partition parser + +lede-commit: daec7ad7688415156e2730e401503d09bd3acf91 +Signed-off-by: Gabor Juhos +--- + drivers/mtd/mtdpart.c | 29 +++++++++++++++++++++++++++++ + include/linux/mtd/mtd.h | 18 ++++++++++++++++++ + include/linux/mtd/partitions.h | 2 ++ + 3 files changed, 49 insertions(+) + +--- a/drivers/mtd/mtdpart.c ++++ b/drivers/mtd/mtdpart.c +@@ -1179,6 +1179,24 @@ int mtd_is_partition(const struct mtd_in + } + EXPORT_SYMBOL_GPL(mtd_is_partition); + ++struct mtd_info *mtdpart_get_master(const struct mtd_info *mtd) ++{ ++ if (!mtd_is_partition(mtd)) ++ return (struct mtd_info *)mtd; ++ ++ return mtd_to_part(mtd)->parent; ++} ++EXPORT_SYMBOL_GPL(mtdpart_get_master); ++ ++uint64_t mtdpart_get_offset(const struct mtd_info *mtd) ++{ ++ if (!mtd_is_partition(mtd)) ++ return 0; ++ ++ return mtd_to_part(mtd)->offset; ++} ++EXPORT_SYMBOL_GPL(mtdpart_get_offset); ++ + /* Returns the size of the entire flash chip */ + uint64_t mtd_get_device_size(const struct mtd_info *mtd) + { +--- a/include/linux/mtd/mtd.h ++++ b/include/linux/mtd/mtd.h +@@ -507,6 +507,24 @@ static inline void mtd_align_erase_req(s + req->len += mtd->erasesize - mod; + } + ++static inline uint64_t mtd_roundup_to_eb(uint64_t sz, struct mtd_info *mtd) ++{ ++ if (mtd_mod_by_eb(sz, mtd) == 0) ++ return sz; ++ ++ /* Round up to next erase block */ ++ return (mtd_div_by_eb(sz, mtd) + 1) * mtd->erasesize; ++} ++ ++static inline uint64_t mtd_rounddown_to_eb(uint64_t sz, struct mtd_info *mtd) ++{ ++ if (mtd_mod_by_eb(sz, mtd) == 0) ++ return sz; ++ ++ /* Round down to the start of the current erase block */ ++ return (mtd_div_by_eb(sz, mtd)) * mtd->erasesize; ++} ++ + static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd) + { + if (mtd->writesize_shift) +--- a/include/linux/mtd/partitions.h ++++ b/include/linux/mtd/partitions.h +@@ -116,6 +116,8 @@ int mtd_is_partition(const struct mtd_in + int mtd_add_partition(struct mtd_info *master, const char *name, + long long offset, long long length); + int mtd_del_partition(struct mtd_info *master, int partno); ++struct mtd_info *mtdpart_get_master(const struct mtd_info *mtd); ++uint64_t mtdpart_get_offset(const struct mtd_info *mtd); + uint64_t mtd_get_device_size(const struct mtd_info *mtd); + + #endif -- cgit v1.2.3