kernel: split patches folder up into backport, pending and hack folders

[openwrt/staging/dedeckeh.git] / target / linux / generic / pending-3.18 / 440-block2mtd_init.patch

diff --git a/target/linux/generic/pending-3.18/440-block2mtd_init.patch b/target/linux/generic/pending-3.18/440-block2mtd_init.patch
new file mode 100644 (file)
index 0000000..5ab6026
--- /dev/null
+++ b/target/linux/generic/pending-3.18/440-block2mtd_init.patch
@@ -0,0 +1,107 @@
+--- a/drivers/mtd/devices/block2mtd.c
++++ b/drivers/mtd/devices/block2mtd.c
+@@ -17,6 +17,7 @@
+ #include <linux/list.h>
+ #include <linux/init.h>
+ #include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
+ #include <linux/mutex.h>
+ #include <linux/mount.h>
+ #include <linux/slab.h>
+@@ -209,11 +210,12 @@ static void block2mtd_free_device(struct
+ }
+ 
+ 
+-static struct block2mtd_dev *add_device(char *devname, int erase_size)
++static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname)
+ {
+       const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
+       struct block_device *bdev;
+       struct block2mtd_dev *dev;
++      struct mtd_partition *part;
+       char *name;
+ 
+       if (!devname)
+@@ -257,13 +259,16 @@ static struct block2mtd_dev *add_device(
+ 
+       /* Setup the MTD structure */
+       /* make the name contain the block device in */
+-      name = kasprintf(GFP_KERNEL, "block2mtd: %s", devname);
++      if (!mtdname)
++              mtdname = devname;
++      name = kmalloc(strlen(mtdname) + 1, GFP_KERNEL);
+       if (!name)
+               goto err_destroy_mutex;
+ 
++      strcpy(name, mtdname);
+       dev->mtd.name = name;
+ 
+-      dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
++      dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK & ~(erase_size - 1);
+       dev->mtd.erasesize = erase_size;
+       dev->mtd.writesize = 1;
+       dev->mtd.writebufsize = PAGE_SIZE;
+@@ -276,15 +281,18 @@ static struct block2mtd_dev *add_device(
+       dev->mtd.priv = dev;
+       dev->mtd.owner = THIS_MODULE;
+ 
+-      if (mtd_device_register(&dev->mtd, NULL, 0)) {
++      part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
++      part->name = name;
++      part->offset = 0;
++      part->size = dev->mtd.size;
++      if (mtd_device_register(&dev->mtd, part, 1)) {
+               /* Device didn't get added, so free the entry */
+               goto err_destroy_mutex;
+       }
+       list_add(&dev->list, &blkmtd_device_list);
+       pr_info("mtd%d: [%s] erase_size = %dKiB [%d]\n",
+               dev->mtd.index,
+-              dev->mtd.name + strlen("block2mtd: "),
+-              dev->mtd.erasesize >> 10, dev->mtd.erasesize);
++              mtdname, dev->mtd.erasesize >> 10, dev->mtd.erasesize);
+       return dev;
+ 
+ err_destroy_mutex:
+@@ -353,9 +361,9 @@ static char block2mtd_paramline[80 + 12]
+ 
+ static int block2mtd_setup2(const char *val)
+ {
+-      char buf[80 + 12]; /* 80 for device, 12 for erase size */
++      char buf[80 + 12 + 80]; /* 80 for device, 12 for erase size, 80 for name */
+       char *str = buf;
+-      char *token[2];
++      char *token[3];
+       char *name;
+       size_t erase_size = PAGE_SIZE;
+       int i, ret;
+@@ -368,7 +376,7 @@ static int block2mtd_setup2(const char *
+       strcpy(str, val);
+       kill_final_newline(str);
+ 
+-      for (i = 0; i < 2; i++)
++      for (i = 0; i < 3; i++)
+               token[i] = strsep(&str, ",");
+ 
+       if (str) {
+@@ -394,8 +402,10 @@ static int block2mtd_setup2(const char *
+                       return 0;
+               }
+       }
++      if (token[2] && (strlen(token[2]) + 1 > 80))
++              pr_err("mtd device name too long\n");
+ 
+-      add_device(name, erase_size);
++      add_device(name, erase_size, token[2]);
+ 
+       return 0;
+ }
+@@ -429,7 +439,7 @@ static int block2mtd_setup(const char *v
+ 
+ 
+ module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
+-MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
++MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>]]\"");
+ 
+ static int __init block2mtd_init(void)
+ {