base-files: fix PKG_CONFIG_DEPENDS to include version.mk entries
[openwrt/openwrt.git] / target / linux / generic / patches-4.9 / 404-mtd-add-more-helper-functions.patch
1 --- a/drivers/mtd/mtdpart.c
2 +++ b/drivers/mtd/mtdpart.c
3 @@ -493,14 +493,12 @@ static struct mtd_part *allocate_partiti
4 if (slave->offset == MTDPART_OFS_APPEND)
5 slave->offset = cur_offset;
6 if (slave->offset == MTDPART_OFS_NXTBLK) {
7 - slave->offset = cur_offset;
8 - if (mtd_mod_by_eb(cur_offset, master) != 0) {
9 - /* Round up to next erasesize */
10 - slave->offset = (mtd_div_by_eb(cur_offset, master) + 1) * master->erasesize;
11 + /* Round up to next erasesize */
12 + slave->offset = mtd_roundup_to_eb(cur_offset, master);
13 + if (slave->offset != cur_offset)
14 printk(KERN_NOTICE "Moving partition %d: "
15 "0x%012llx -> 0x%012llx\n", partno,
16 (unsigned long long)cur_offset, (unsigned long long)slave->offset);
17 - }
18 }
19 if (slave->offset == MTDPART_OFS_RETAIN) {
20 slave->offset = cur_offset;
21 @@ -717,6 +715,17 @@ run_parsers_by_type(struct mtd_part *sla
22 return nr_parts;
23 }
24
25 +static inline unsigned long
26 +mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
27 +{
28 + unsigned long mask = mtd->erasesize - 1;
29 +
30 + len += offset & mask;
31 + len = (len + mask) & ~mask;
32 + len -= offset & mask;
33 + return len;
34 +}
35 +
36 #ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
37 #define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
38 #else
39 @@ -1055,6 +1064,24 @@ int mtd_is_partition(const struct mtd_in
40 }
41 EXPORT_SYMBOL_GPL(mtd_is_partition);
42
43 +struct mtd_info *mtdpart_get_master(const struct mtd_info *mtd)
44 +{
45 + if (!mtd_is_partition(mtd))
46 + return (struct mtd_info *)mtd;
47 +
48 + return mtd_to_part(mtd)->master;
49 +}
50 +EXPORT_SYMBOL_GPL(mtdpart_get_master);
51 +
52 +uint64_t mtdpart_get_offset(const struct mtd_info *mtd)
53 +{
54 + if (!mtd_is_partition(mtd))
55 + return 0;
56 +
57 + return mtd_to_part(mtd)->offset;
58 +}
59 +EXPORT_SYMBOL_GPL(mtdpart_get_offset);
60 +
61 /* Returns the size of the entire flash chip */
62 uint64_t mtd_get_device_size(const struct mtd_info *mtd)
63 {
64 --- a/include/linux/mtd/partitions.h
65 +++ b/include/linux/mtd/partitions.h
66 @@ -106,6 +106,8 @@ int mtd_is_partition(const struct mtd_in
67 int mtd_add_partition(struct mtd_info *master, const char *name,
68 long long offset, long long length);
69 int mtd_del_partition(struct mtd_info *master, int partno);
70 +struct mtd_info *mtdpart_get_master(const struct mtd_info *mtd);
71 +uint64_t mtdpart_get_offset(const struct mtd_info *mtd);
72 uint64_t mtd_get_device_size(const struct mtd_info *mtd);
73 extern void __weak arch_split_mtd_part(struct mtd_info *master,
74 const char *name, int offset, int size);
75 --- a/include/linux/mtd/mtd.h
76 +++ b/include/linux/mtd/mtd.h
77 @@ -472,6 +472,24 @@ static inline uint32_t mtd_mod_by_eb(uin
78 return do_div(sz, mtd->erasesize);
79 }
80
81 +static inline uint64_t mtd_roundup_to_eb(uint64_t sz, struct mtd_info *mtd)
82 +{
83 + if (mtd_mod_by_eb(sz, mtd) == 0)
84 + return sz;
85 +
86 + /* Round up to next erase block */
87 + return (mtd_div_by_eb(sz, mtd) + 1) * mtd->erasesize;
88 +}
89 +
90 +static inline uint64_t mtd_rounddown_to_eb(uint64_t sz, struct mtd_info *mtd)
91 +{
92 + if (mtd_mod_by_eb(sz, mtd) == 0)
93 + return sz;
94 +
95 + /* Round down to the start of the current erase block */
96 + return (mtd_div_by_eb(sz, mtd)) * mtd->erasesize;
97 +}
98 +
99 static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd)
100 {
101 if (mtd->writesize_shift)