diff options
Diffstat (limited to 'target/linux/generic/patches-4.4/440-block2mtd_init.patch')
| -rw-r--r-- | target/linux/generic/patches-4.4/440-block2mtd_init.patch | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/440-block2mtd_init.patch b/target/linux/generic/patches-4.4/440-block2mtd_init.patch new file mode 100644 index 0000000000..f2e62b4401 --- /dev/null +++ b/target/linux/generic/patches-4.4/440-block2mtd_init.patch @@ -0,0 +1,108 @@ +--- a/drivers/mtd/devices/block2mtd.c ++++ b/drivers/mtd/devices/block2mtd.c +@@ -26,6 +26,7 @@ + #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> +@@ -219,7 +220,7 @@ static void block2mtd_free_device(struct + + + static struct block2mtd_dev *add_device(char *devname, int erase_size, +- int timeout) ++ const char *mtdname, int timeout) + { + #ifndef MODULE + int i; +@@ -227,6 +228,7 @@ static struct block2mtd_dev *add_device( + const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL; + struct block_device *bdev = ERR_PTR(-ENODEV); + struct block2mtd_dev *dev; ++ struct mtd_partition *part; + char *name; + + if (!devname) +@@ -283,13 +285,16 @@ 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; +@@ -302,7 +307,11 @@ 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; + } +@@ -310,8 +319,7 @@ static struct block2mtd_dev *add_device( + 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: +@@ -384,7 +392,7 @@ static int block2mtd_setup2(const char * + /* 80 for device, 12 for erase size, 80 for name, 8 for timeout */ + char buf[80 + 12 + 80 + 8]; + char *str = buf; +- char *token[2]; ++ char *token[3]; + char *name; + size_t erase_size = PAGE_SIZE; + unsigned long timeout = MTD_DEFAULT_TIMEOUT; +@@ -398,7 +406,7 @@ 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) { +@@ -424,8 +432,10 @@ 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, timeout); ++ add_device(name, erase_size, token[2], timeout); + + return 0; + } +@@ -459,7 +469,7 @@ 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) + { |