| 1 | --- a/drivers/mtd/devices/block2mtd.c |
| 2 | +++ b/drivers/mtd/devices/block2mtd.c |
| 3 | @@ -14,6 +14,7 @@ |
| 4 | #include <linux/list.h> |
| 5 | #include <linux/init.h> |
| 6 | #include <linux/mtd/mtd.h> |
| 7 | +#include <linux/mtd/partitions.h> |
| 8 | #include <linux/buffer_head.h> |
| 9 | #include <linux/mutex.h> |
| 10 | #include <linux/mount.h> |
| 11 | @@ -232,10 +233,11 @@ static void block2mtd_free_device(struct |
| 12 | |
| 13 | |
| 14 | /* FIXME: ensure that mtd->size % erase_size == 0 */ |
| 15 | -static struct block2mtd_dev *add_device(char *devname, int erase_size) |
| 16 | +static struct block2mtd_dev *add_device(char *devname, int erase_size, const char *mtdname) |
| 17 | { |
| 18 | struct block_device *bdev; |
| 19 | struct block2mtd_dev *dev; |
| 20 | + struct mtd_partition *part; |
| 21 | char *name; |
| 22 | |
| 23 | if (!devname) |
| 24 | @@ -273,17 +275,17 @@ static struct block2mtd_dev *add_device( |
| 25 | |
| 26 | mutex_init(&dev->write_mutex); |
| 27 | |
| 28 | - /* Setup the MTD structure */ |
| 29 | - /* make the name contain the block device in */ |
| 30 | - name = kmalloc(sizeof("block2mtd: ") + strlen(devname) + 1, |
| 31 | - GFP_KERNEL); |
| 32 | + if (!mtdname) |
| 33 | + mtdname = devname; |
| 34 | + |
| 35 | + name = kmalloc(strlen(mtdname) + 1, GFP_KERNEL); |
| 36 | if (!name) |
| 37 | goto devinit_err; |
| 38 | |
| 39 | - sprintf(name, "block2mtd: %s", devname); |
| 40 | + strcpy(name, mtdname); |
| 41 | dev->mtd.name = name; |
| 42 | |
| 43 | - dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK; |
| 44 | + dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK & ~(erase_size - 1); |
| 45 | dev->mtd.erasesize = erase_size; |
| 46 | dev->mtd.writesize = 1; |
| 47 | dev->mtd.type = MTD_RAM; |
| 48 | @@ -296,14 +298,17 @@ static struct block2mtd_dev *add_device( |
| 49 | dev->mtd.priv = dev; |
| 50 | dev->mtd.owner = THIS_MODULE; |
| 51 | |
| 52 | - if (add_mtd_device(&dev->mtd)) { |
| 53 | + part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL); |
| 54 | + part->name = dev->mtd.name; |
| 55 | + part->offset = 0; |
| 56 | + part->size = dev->mtd.size; |
| 57 | + if (add_mtd_partitions(&dev->mtd, part, 1)) { |
| 58 | /* Device didnt get added, so free the entry */ |
| 59 | goto devinit_err; |
| 60 | } |
| 61 | list_add(&dev->list, &blkmtd_device_list); |
| 62 | INFO("mtd%d: [%s] erase_size = %dKiB [%d]", dev->mtd.index, |
| 63 | - dev->mtd.name + strlen("block2mtd: "), |
| 64 | - dev->mtd.erasesize >> 10, dev->mtd.erasesize); |
| 65 | + mtdname, dev->mtd.erasesize >> 10, dev->mtd.erasesize); |
| 66 | return dev; |
| 67 | |
| 68 | devinit_err: |
| 69 | @@ -376,9 +381,9 @@ static char block2mtd_paramline[80 + 12] |
| 70 | |
| 71 | static int block2mtd_setup2(const char *val) |
| 72 | { |
| 73 | - char buf[80 + 12]; /* 80 for device, 12 for erase size */ |
| 74 | + char buf[80 + 12 + 80]; /* 80 for device, 12 for erase size, 80 for name */ |
| 75 | char *str = buf; |
| 76 | - char *token[2]; |
| 77 | + char *token[3]; |
| 78 | char *name; |
| 79 | size_t erase_size = PAGE_SIZE; |
| 80 | int i, ret; |
| 81 | @@ -389,7 +394,7 @@ static int block2mtd_setup2(const char * |
| 82 | strcpy(str, val); |
| 83 | kill_final_newline(str); |
| 84 | |
| 85 | - for (i = 0; i < 2; i++) |
| 86 | + for (i = 0; i < 3; i++) |
| 87 | token[i] = strsep(&str, ","); |
| 88 | |
| 89 | if (str) |
| 90 | @@ -408,8 +413,10 @@ static int block2mtd_setup2(const char * |
| 91 | parse_err("illegal erase size"); |
| 92 | } |
| 93 | } |
| 94 | + if (token[2] && (strlen(token[2]) + 1 > 80)) |
| 95 | + parse_err("mtd device name too long"); |
| 96 | |
| 97 | - add_device(name, erase_size); |
| 98 | + add_device(name, erase_size, token[2]); |
| 99 | |
| 100 | return 0; |
| 101 | } |
| 102 | @@ -443,7 +450,7 @@ static int block2mtd_setup(const char *v |
| 103 | |
| 104 | |
| 105 | module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200); |
| 106 | -MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\""); |
| 107 | +MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>]]\""); |
| 108 | |
| 109 | static int __init block2mtd_init(void) |
| 110 | { |
| 111 | |
