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