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authorJonas Gorski <jogo@openwrt.org>2015-06-22 12:27:59 +0000
committerJonas Gorski <jogo@openwrt.org>2015-06-22 12:27:59 +0000
commita0c49ef46f7caf5eb02c635d446218201008ecff (patch)
treea94180d50839c1587dfe845e8faf16405fab78ff /target/linux/generic/patches-4.1/404-mtd-add-more-helper-functions.patch
parent518ab154e059c9f39684f8c78159c9caf333716b (diff)
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generic: add linux 4.1 support
Boot tested: http://pastebin.com/L6aAb9xj Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> [jogo: update to 4.1 final add patches added since submission delete patches applied in later rcs restore commit messages in 220-gc-sections and 304-mips_disable_fpu fix 050-backport_netfilter_rtcache to match new API update inlined dma ops with upstream changes add missing config symbols enabled CONFIG_MULTIUSER update kmod defintions for 4.1 ] Signed-off-by: Jonas Gorski <jogo@openwrt.org> SVN-Revision: 46112
Diffstat (limited to 'target/linux/generic/patches-4.1/404-mtd-add-more-helper-functions.patch')
-rw-r--r--target/linux/generic/patches-4.1/404-mtd-add-more-helper-functions.patch101
1 files changed, 101 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.1/404-mtd-add-more-helper-functions.patch b/target/linux/generic/patches-4.1/404-mtd-add-more-helper-functions.patch
new file mode 100644
index 0000000000..fe3a2129de
--- /dev/null
+++ b/target/linux/generic/patches-4.1/404-mtd-add-more-helper-functions.patch
@@ -0,0 +1,101 @@
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -452,14 +452,12 @@ static struct mtd_part *allocate_partiti
+ if (slave->offset == MTDPART_OFS_APPEND)
+ slave->offset = cur_offset;
+ if (slave->offset == MTDPART_OFS_NXTBLK) {
+- slave->offset = cur_offset;
+- if (mtd_mod_by_eb(cur_offset, master) != 0) {
+- /* Round up to next erasesize */
+- slave->offset = (mtd_div_by_eb(cur_offset, master) + 1) * master->erasesize;
++ /* Round up to next erasesize */
++ slave->offset = mtd_roundup_to_eb(cur_offset, master);
++ if (slave->offset != cur_offset)
+ printk(KERN_NOTICE "Moving partition %d: "
+ "0x%012llx -> 0x%012llx\n", partno,
+ (unsigned long long)cur_offset, (unsigned long long)slave->offset);
+- }
+ }
+ if (slave->offset == MTDPART_OFS_RETAIN) {
+ slave->offset = cur_offset;
+@@ -686,6 +684,17 @@ run_parsers_by_type(struct mtd_part *sla
+ return nr_parts;
+ }
+
++static inline unsigned long
++mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
++{
++ unsigned long mask = mtd->erasesize - 1;
++
++ len += offset & mask;
++ len = (len + mask) & ~mask;
++ len -= offset & mask;
++ return len;
++}
++
+ #ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
+ #define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
+ #else
+@@ -928,6 +937,24 @@ 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 PART(mtd)->master;
++}
++EXPORT_SYMBOL_GPL(mtdpart_get_master);
++
++uint64_t mtdpart_get_offset(const struct mtd_info *mtd)
++{
++ if (!mtd_is_partition(mtd))
++ return 0;
++
++ return 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/partitions.h
++++ b/include/linux/mtd/partitions.h
+@@ -90,6 +90,8 @@ 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);
+ extern void __weak arch_split_mtd_part(struct mtd_info *master,
+ const char *name, int offset, int size);
+--- a/include/linux/mtd/mtd.h
++++ b/include/linux/mtd/mtd.h
+@@ -334,6 +334,24 @@ static inline uint32_t mtd_mod_by_eb(uin
+ return do_div(sz, mtd->erasesize);
+ }
+
++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)