kernel/3.1[02]: move MTD root device setup code to mtdcore

The current code only allows to automatically set
root device on MTD partitions. Move the code to MTD
core to allow to use it with all MTD devices.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 38643

diff --git a/target/linux/generic/patches-3.10/400-mtd-add-rootfs-split-support.patch b/target/linux/generic/patches-3.10/400-mtd-add-rootfs-split-support.patch
index 6a4c16134e9e8f7183d3ed8bac2f41be3c7e1f5c..6c17b01e53e71754cfd02a7a1a7a703bff5e752c 100644 (file)
--- a/target/linux/generic/patches-3.10/400-mtd-add-rootfs-split-support.patch
+++ b/target/linux/generic/patches-3.10/400-mtd-add-rootfs-split-support.patch
@@ -35,16 +35,15 @@
        depends on m
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -29,6 +29,8 @@
+@@ -29,6 +29,7 @@
  #include <linux/kmod.h>
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
-+#include <linux/root_dev.h>
 +#include <linux/magic.h>
  #include <linux/err.h>
  
  #include "mtdcore.h"
-@@ -45,13 +47,14 @@ struct mtd_part {
+@@ -45,13 +46,14 @@ struct mtd_part {
        struct list_head list;
  };
  
@@ -60,7 +59,7 @@
  /*
   * MTD methods which simply translate the effective address and pass through
   * to the _real_ device.
-@@ -533,8 +536,10 @@ out_register:
+@@ -533,8 +535,10 @@ out_register:
        return slave;
  }
  
@@ -73,7 +72,7 @@
  {
        struct mtd_partition part;
        struct mtd_part *p, *new;
-@@ -566,21 +571,24 @@ int mtd_add_partition(struct mtd_info *m
+@@ -566,21 +570,24 @@ int mtd_add_partition(struct mtd_info *m
        end = offset + length;
  
        mutex_lock(&mtd_partitions_mutex);
@@ -108,7 +107,7 @@
  
        return ret;
  err_inv:
-@@ -590,6 +598,12 @@ err_inv:
+@@ -590,6 +597,12 @@ err_inv:
  }
  EXPORT_SYMBOL_GPL(mtd_add_partition);
  
@@ -121,7 +120,7 @@
  int mtd_del_partition(struct mtd_info *master, int partno)
  {
        struct mtd_part *slave, *next;
-@@ -613,6 +627,151 @@ int mtd_del_partition(struct mtd_info *m
+@@ -613,6 +626,144 @@ int mtd_del_partition(struct mtd_info *m
  }
  EXPORT_SYMBOL_GPL(mtd_del_partition);
  
@@ -252,13 +251,6 @@
 +      if (!strcmp(part->mtd.name, "rootfs")) {
 +              rootfs_found = 1;
 +
-+              if (config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
-+                  ROOT_DEV == 0) {
-+                      printk(KERN_NOTICE "mtd: partition \"rootfs\" "
-+                              "set to be root filesystem\n");
-+                      ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, part->mtd.index);
-+              }
-+
 +              if (config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
 +                      split_rootfs_data(master, part);
 +      }
@@ -273,7 +265,7 @@
  /*
   * 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
-@@ -642,6 +801,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -642,6 +793,7 @@ int add_mtd_partitions(struct mtd_info *
                mutex_unlock(&mtd_partitions_mutex);
  
                add_mtd_device(&slave->mtd);

diff --git a/target/linux/generic/patches-3.10/401-mtd-add-support-for-different-partition-parser-types.patch b/target/linux/generic/patches-3.10/401-mtd-add-support-for-different-partition-parser-types.patch
index 8ac084d5e1fc152d4c29253711b06e47c2b80f50..bd35aa7d35388e96178fc1e4ab3b49a9756e7f53 100644 (file)
--- a/target/linux/generic/patches-3.10/401-mtd-add-support-for-different-partition-parser-types.patch
+++ b/target/linux/generic/patches-3.10/401-mtd-add-support-for-different-partition-parser-types.patch
@@ -11,7 +11,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
 
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -831,6 +831,30 @@ static struct mtd_part_parser *get_parti
+@@ -823,6 +823,30 @@ static struct mtd_part_parser *get_parti
  
  #define put_partition_parser(p) do { module_put((p)->owner); } while (0)
  
@@ -42,7 +42,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  int register_mtd_parser(struct mtd_part_parser *p)
  {
        spin_lock(&part_parser_lock);
-@@ -907,6 +931,38 @@ int parse_mtd_partitions(struct mtd_info
+@@ -899,6 +923,38 @@ int parse_mtd_partitions(struct mtd_info
        return ret;
  }
  

diff --git a/target/linux/generic/patches-3.10/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch b/target/linux/generic/patches-3.10/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
index a614094851c8db0a23be3225724cd28a7d2f1798..649693ff22c2c6c7ac8f7800f9d37c22ec7d6dd7 100644 (file)
--- a/target/linux/generic/patches-3.10/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
+++ b/target/linux/generic/patches-3.10/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -627,6 +627,37 @@ int mtd_del_partition(struct mtd_info *m
+@@ -626,6 +626,37 @@ int mtd_del_partition(struct mtd_info *m
  }
  EXPORT_SYMBOL_GPL(mtd_del_partition);
  
@@ -38,7 +38,7 @@
  static inline unsigned long
  mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
  {
-@@ -686,6 +717,10 @@ static void split_rootfs_data(struct mtd
+@@ -685,6 +716,10 @@ static void split_rootfs_data(struct mtd
        unsigned int split_size;
        int ret;
  
@@ -49,7 +49,7 @@
        ret = split_squashfs(master, part->offset, &split_offset);
        if (ret)
                return;
-@@ -735,6 +770,12 @@ static void split_uimage(struct mtd_info
+@@ -734,6 +769,12 @@ static void split_uimage(struct mtd_info
  
  static void split_firmware(struct mtd_info *master, struct mtd_part *part)
  {

diff --git a/target/linux/generic/patches-3.10/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch b/target/linux/generic/patches-3.10/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
index 43960b3065a0aad2d17a9b1d130218a227c3db28..9024026c9c67cab35771dd5626d8b04b274d217f 100644 (file)
--- a/target/linux/generic/patches-3.10/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
+++ b/target/linux/generic/patches-3.10/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -34,6 +34,7 @@
+@@ -33,6 +33,7 @@
  #include <linux/err.h>
  
  #include "mtdcore.h"
@@ -8,7 +8,7 @@
  
  /* Our partition linked list */
  static LIST_HEAD(mtd_partitions);
-@@ -669,43 +670,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
+@@ -668,43 +669,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
        return len;
  }
  

diff --git a/target/linux/generic/patches-3.10/405-mtd-add-more-helper-functions.patch b/target/linux/generic/patches-3.10/405-mtd-add-more-helper-functions.patch
index 97ad2db87e5d1f6fe45a4b1a08ab135bd6f279eb..9c75e5cb15aaf1054a5f19c86bd7a705e92289fd 100644 (file)
--- a/target/linux/generic/patches-3.10/405-mtd-add-more-helper-functions.patch
+++ b/target/linux/generic/patches-3.10/405-mtd-add-more-helper-functions.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -435,14 +435,12 @@ static struct mtd_part *allocate_partiti
+@@ -434,14 +434,12 @@ static struct mtd_part *allocate_partiti
        if (slave->offset == MTDPART_OFS_APPEND)
                slave->offset = cur_offset;
        if (slave->offset == MTDPART_OFS_NXTBLK) {
@@ -18,7 +18,7 @@
        }
        if (slave->offset == MTDPART_OFS_RETAIN) {
                slave->offset = cur_offset;
-@@ -995,6 +993,24 @@ int mtd_is_partition(const struct mtd_in
+@@ -987,6 +985,24 @@ int mtd_is_partition(const struct mtd_in
  }
  EXPORT_SYMBOL_GPL(mtd_is_partition);
  

diff --git a/target/linux/generic/patches-3.10/411-mtd-partial_eraseblock_write.patch b/target/linux/generic/patches-3.10/411-mtd-partial_eraseblock_write.patch
index 560096f854b1642e13129b02b16946ed688a73fe..b7152110b2912b61bddbbd0e0b039063bcca6c32 100644 (file)
--- a/target/linux/generic/patches-3.10/411-mtd-partial_eraseblock_write.patch
+++ b/target/linux/generic/patches-3.10/411-mtd-partial_eraseblock_write.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -36,6 +36,8 @@
+@@ -35,6 +35,8 @@
  #include "mtdcore.h"
  #include "mtdsplit.h"
  
@@ -9,7 +9,7 @@
  /* Our partition linked list */
  static LIST_HEAD(mtd_partitions);
  static DEFINE_MUTEX(mtd_partitions_mutex);
-@@ -232,13 +234,60 @@ static int part_erase(struct mtd_info *m
+@@ -231,13 +233,60 @@ static int part_erase(struct mtd_info *m
        struct mtd_part *part = PART(mtd);
        int ret;
  
@@ -70,7 +70,7 @@
        return ret;
  }
  
-@@ -246,7 +295,25 @@ void mtd_erase_callback(struct erase_inf
+@@ -245,7 +294,25 @@ void mtd_erase_callback(struct erase_inf
  {
        if (instr->mtd->_erase == part_erase) {
                struct mtd_part *part = PART(instr->mtd);
@@ -96,7 +96,7 @@
                if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
                        instr->fail_addr -= part->offset;
                instr->addr -= part->offset;
-@@ -504,18 +571,24 @@ static struct mtd_part *allocate_partiti
+@@ -503,18 +570,24 @@ static struct mtd_part *allocate_partiti
        if ((slave->mtd.flags & MTD_WRITEABLE) &&
            mtd_mod_by_eb(slave->offset, &slave->mtd)) {
                /* Doesn't start on a boundary of major erase size */

diff --git a/target/linux/generic/patches-3.10/412-mtd-partial_eraseblock_unlock.patch b/target/linux/generic/patches-3.10/412-mtd-partial_eraseblock_unlock.patch
index 87c8257fe115d55ae72c1476d01f9288591ecc59..134f65715e95bd320a449d3fcfb99a11d7b391b5 100644 (file)
--- a/target/linux/generic/patches-3.10/412-mtd-partial_eraseblock_unlock.patch
+++ b/target/linux/generic/patches-3.10/412-mtd-partial_eraseblock_unlock.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -332,7 +332,14 @@ static int part_lock(struct mtd_info *mt
+@@ -331,7 +331,14 @@ static int part_lock(struct mtd_info *mt
  static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
  {
        struct mtd_part *part = PART(mtd);

diff --git a/target/linux/generic/patches-3.10/480-mtd-set-rootfs-to-be-root-dev.patch b/target/linux/generic/patches-3.10/480-mtd-set-rootfs-to-be-root-dev.patch
new file mode 100644 (file)
index 0000000..58c4a8a
--- /dev/null
+++ b/target/linux/generic/patches-3.10/480-mtd-set-rootfs-to-be-root-dev.patch
@@ -0,0 +1,26 @@
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -37,6 +37,7 @@
+ #include <linux/backing-dev.h>
+ #include <linux/gfp.h>
+ #include <linux/slab.h>
++#include <linux/root_dev.h>
+ 
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+@@ -408,6 +409,15 @@ int add_mtd_device(struct mtd_info *mtd)
+          of this try_ nonsense, and no bitching about it
+          either. :) */
+       __module_get(THIS_MODULE);
++
++      if (!strcmp(mtd->name, "rootfs") &&
++          config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
++          ROOT_DEV == 0) {
++              pr_notice("mtd: device %d (%s) set to be root filesystem\n",
++                        mtd->index, mtd->name);
++              ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
++      }
++
+       return 0;
+ 
+ fail_added:

diff --git a/target/linux/generic/patches-3.12/400-mtd-add-rootfs-split-support.patch b/target/linux/generic/patches-3.12/400-mtd-add-rootfs-split-support.patch
index 215aef14deb6d7516eea580c4b6d5240c9b39bc2..ce91d7ba5e369063123358f4d62c2f72f336aed0 100644 (file)
--- a/target/linux/generic/patches-3.12/400-mtd-add-rootfs-split-support.patch
+++ b/target/linux/generic/patches-3.12/400-mtd-add-rootfs-split-support.patch
@@ -35,16 +35,15 @@
        depends on m
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -29,6 +29,8 @@
+@@ -29,6 +29,7 @@
  #include <linux/kmod.h>
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
-+#include <linux/root_dev.h>
 +#include <linux/magic.h>
  #include <linux/err.h>
  
  #include "mtdcore.h"
-@@ -45,13 +47,14 @@ struct mtd_part {
+@@ -45,13 +46,14 @@ struct mtd_part {
        struct list_head list;
  };
  
@@ -60,7 +59,7 @@
  /*
   * MTD methods which simply translate the effective address and pass through
   * to the _real_ device.
-@@ -534,8 +537,10 @@ out_register:
+@@ -534,8 +536,10 @@ out_register:
        return slave;
  }
  
@@ -73,7 +72,7 @@
  {
        struct mtd_partition part;
        struct mtd_part *p, *new;
-@@ -567,21 +572,24 @@ int mtd_add_partition(struct mtd_info *m
+@@ -567,21 +571,24 @@ int mtd_add_partition(struct mtd_info *m
        end = offset + length;
  
        mutex_lock(&mtd_partitions_mutex);
@@ -108,7 +107,7 @@
  
        return ret;
  err_inv:
-@@ -591,6 +599,12 @@ err_inv:
+@@ -591,6 +598,12 @@ err_inv:
  }
  EXPORT_SYMBOL_GPL(mtd_add_partition);
  
@@ -121,7 +120,7 @@
  int mtd_del_partition(struct mtd_info *master, int partno)
  {
        struct mtd_part *slave, *next;
-@@ -614,6 +628,151 @@ int mtd_del_partition(struct mtd_info *m
+@@ -614,6 +627,144 @@ int mtd_del_partition(struct mtd_info *m
  }
  EXPORT_SYMBOL_GPL(mtd_del_partition);
  
@@ -252,13 +251,6 @@
 +      if (!strcmp(part->mtd.name, "rootfs")) {
 +              rootfs_found = 1;
 +
-+              if (config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
-+                  ROOT_DEV == 0) {
-+                      printk(KERN_NOTICE "mtd: partition \"rootfs\" "
-+                              "set to be root filesystem\n");
-+                      ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, part->mtd.index);
-+              }
-+
 +              if (config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
 +                      split_rootfs_data(master, part);
 +      }
@@ -273,7 +265,7 @@
  /*
   * 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
-@@ -643,6 +802,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -643,6 +794,7 @@ int add_mtd_partitions(struct mtd_info *
                mutex_unlock(&mtd_partitions_mutex);
  
                add_mtd_device(&slave->mtd);

diff --git a/target/linux/generic/patches-3.12/401-mtd-add-support-for-different-partition-parser-types.patch b/target/linux/generic/patches-3.12/401-mtd-add-support-for-different-partition-parser-types.patch
index 8d7bcdeee6049457e8cf8d07dcb1c90267fd06b9..52b87f56cc903cc84490f0de3dc4ec5744b5bb7f 100644 (file)
--- a/target/linux/generic/patches-3.12/401-mtd-add-support-for-different-partition-parser-types.patch
+++ b/target/linux/generic/patches-3.12/401-mtd-add-support-for-different-partition-parser-types.patch
@@ -11,7 +11,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
 
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -832,6 +832,30 @@ static struct mtd_part_parser *get_parti
+@@ -824,6 +824,30 @@ static struct mtd_part_parser *get_parti
  
  #define put_partition_parser(p) do { module_put((p)->owner); } while (0)
  
@@ -42,7 +42,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  int register_mtd_parser(struct mtd_part_parser *p)
  {
        spin_lock(&part_parser_lock);
-@@ -908,6 +932,38 @@ int parse_mtd_partitions(struct mtd_info
+@@ -900,6 +924,38 @@ int parse_mtd_partitions(struct mtd_info
        return ret;
  }
  

diff --git a/target/linux/generic/patches-3.12/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch b/target/linux/generic/patches-3.12/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
index 8d0bda825f460a7c96171d9534480918864eebd2..a614094851c8db0a23be3225724cd28a7d2f1798 100644 (file)
--- a/target/linux/generic/patches-3.12/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
+++ b/target/linux/generic/patches-3.12/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -628,6 +628,37 @@ int mtd_del_partition(struct mtd_info *m
+@@ -627,6 +627,37 @@ int mtd_del_partition(struct mtd_info *m
  }
  EXPORT_SYMBOL_GPL(mtd_del_partition);
  
@@ -38,7 +38,7 @@
  static inline unsigned long
  mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
  {
-@@ -687,6 +718,10 @@ static void split_rootfs_data(struct mtd
+@@ -686,6 +717,10 @@ static void split_rootfs_data(struct mtd
        unsigned int split_size;
        int ret;
  
@@ -49,7 +49,7 @@
        ret = split_squashfs(master, part->offset, &split_offset);
        if (ret)
                return;
-@@ -736,6 +771,12 @@ static void split_uimage(struct mtd_info
+@@ -735,6 +770,12 @@ static void split_uimage(struct mtd_info
  
  static void split_firmware(struct mtd_info *master, struct mtd_part *part)
  {

diff --git a/target/linux/generic/patches-3.12/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch b/target/linux/generic/patches-3.12/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
index 1ebeca64d1b1e67a222c4c9222d05109749f8e16..a54b97b07c391ba242bbdbeb5b3f7fddd4774ecd 100644 (file)
--- a/target/linux/generic/patches-3.12/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
+++ b/target/linux/generic/patches-3.12/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -34,6 +34,7 @@
+@@ -33,6 +33,7 @@
  #include <linux/err.h>
  
  #include "mtdcore.h"
@@ -8,7 +8,7 @@
  
  /* Our partition linked list */
  static LIST_HEAD(mtd_partitions);
-@@ -670,43 +671,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
+@@ -669,43 +670,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
        return len;
  }
  

diff --git a/target/linux/generic/patches-3.12/405-mtd-add-more-helper-functions.patch b/target/linux/generic/patches-3.12/405-mtd-add-more-helper-functions.patch
index c2578c3003643435cc26bc2d1c095cad80a0b60f..a32aad4f70f7fd1510cb8614db2fba8aec950c8b 100644 (file)
--- a/target/linux/generic/patches-3.12/405-mtd-add-more-helper-functions.patch
+++ b/target/linux/generic/patches-3.12/405-mtd-add-more-helper-functions.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -435,14 +435,12 @@ static struct mtd_part *allocate_partiti
+@@ -434,14 +434,12 @@ static struct mtd_part *allocate_partiti
        if (slave->offset == MTDPART_OFS_APPEND)
                slave->offset = cur_offset;
        if (slave->offset == MTDPART_OFS_NXTBLK) {
@@ -18,7 +18,7 @@
        }
        if (slave->offset == MTDPART_OFS_RETAIN) {
                slave->offset = cur_offset;
-@@ -996,6 +994,24 @@ int mtd_is_partition(const struct mtd_in
+@@ -988,6 +986,24 @@ int mtd_is_partition(const struct mtd_in
  }
  EXPORT_SYMBOL_GPL(mtd_is_partition);
  

diff --git a/target/linux/generic/patches-3.12/411-mtd-partial_eraseblock_write.patch b/target/linux/generic/patches-3.12/411-mtd-partial_eraseblock_write.patch
index 7ecb3312c267000acd582a17161a88523dcbc469..523dd4e375660f262e4e298541eb4307f8f38886 100644 (file)
--- a/target/linux/generic/patches-3.12/411-mtd-partial_eraseblock_write.patch
+++ b/target/linux/generic/patches-3.12/411-mtd-partial_eraseblock_write.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -36,6 +36,8 @@
+@@ -35,6 +35,8 @@
  #include "mtdcore.h"
  #include "mtdsplit.h"
  
@@ -9,7 +9,7 @@
  /* Our partition linked list */
  static LIST_HEAD(mtd_partitions);
  static DEFINE_MUTEX(mtd_partitions_mutex);
-@@ -232,13 +234,60 @@ static int part_erase(struct mtd_info *m
+@@ -231,13 +233,60 @@ static int part_erase(struct mtd_info *m
        struct mtd_part *part = PART(mtd);
        int ret;
  
@@ -70,7 +70,7 @@
        return ret;
  }
  
-@@ -246,7 +295,25 @@ void mtd_erase_callback(struct erase_inf
+@@ -245,7 +294,25 @@ void mtd_erase_callback(struct erase_inf
  {
        if (instr->mtd->_erase == part_erase) {
                struct mtd_part *part = PART(instr->mtd);
@@ -96,7 +96,7 @@
                if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
                        instr->fail_addr -= part->offset;
                instr->addr -= part->offset;
-@@ -504,18 +571,24 @@ static struct mtd_part *allocate_partiti
+@@ -503,18 +570,24 @@ static struct mtd_part *allocate_partiti
        if ((slave->mtd.flags & MTD_WRITEABLE) &&
            mtd_mod_by_eb(slave->offset, &slave->mtd)) {
                /* Doesn't start on a boundary of major erase size */

diff --git a/target/linux/generic/patches-3.12/412-mtd-partial_eraseblock_unlock.patch b/target/linux/generic/patches-3.12/412-mtd-partial_eraseblock_unlock.patch
index 87c8257fe115d55ae72c1476d01f9288591ecc59..134f65715e95bd320a449d3fcfb99a11d7b391b5 100644 (file)
--- a/target/linux/generic/patches-3.12/412-mtd-partial_eraseblock_unlock.patch
+++ b/target/linux/generic/patches-3.12/412-mtd-partial_eraseblock_unlock.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/mtdpart.c
 +++ b/drivers/mtd/mtdpart.c
-@@ -332,7 +332,14 @@ static int part_lock(struct mtd_info *mt
+@@ -331,7 +331,14 @@ static int part_lock(struct mtd_info *mt
  static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
  {
        struct mtd_part *part = PART(mtd);

diff --git a/target/linux/generic/patches-3.12/480-mtd-set-rootfs-to-be-root-dev.patch b/target/linux/generic/patches-3.12/480-mtd-set-rootfs-to-be-root-dev.patch
new file mode 100644 (file)
index 0000000..7ef6778
--- /dev/null
+++ b/target/linux/generic/patches-3.12/480-mtd-set-rootfs-to-be-root-dev.patch
@@ -0,0 +1,26 @@
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -37,6 +37,7 @@
+ #include <linux/backing-dev.h>
+ #include <linux/gfp.h>
+ #include <linux/slab.h>
++#include <linux/root_dev.h>
+ 
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+@@ -419,6 +420,15 @@ int add_mtd_device(struct mtd_info *mtd)
+          of this try_ nonsense, and no bitching about it
+          either. :) */
+       __module_get(THIS_MODULE);
++
++      if (!strcmp(mtd->name, "rootfs") &&
++          config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
++          ROOT_DEV == 0) {
++              pr_notice("mtd: device %d (%s) set to be root filesystem\n",
++                        mtd->index, mtd->name);
++              ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
++      }
++
+       return 0;
+ 
+ fail_added: