* @name: MTD device name or number string
* @vid_hdr_offs: VID header offset
*/
-struct mtd_dev_param
-{
+struct mtd_dev_param {
char name[MTD_PARAM_LEN_MAX];
int vid_hdr_offs;
};
/* Numbers of elements set in the @mtd_dev_param array */
-static int mtd_devs = 0;
+static int mtd_devs;
/* MTD devices specification parameters */
static struct mtd_dev_param mtd_dev_param[UBI_MAX_DEVICES];
}
/**
- * ubi_get_by_major - get UBI device description object by character device
- * major number.
+ * ubi_get_by_major - get UBI device by character device major number.
* @major: major number
*
* This function is similar to 'ubi_get_device()', but it searches the device
ubi->dev.release = dev_release;
ubi->dev.devt = ubi->cdev.dev;
ubi->dev.class = ubi_class;
- sprintf(&ubi->dev.bus_id[0], UBI_NAME_STR"%d", ubi->ubi_num);
+ dev_set_name(&ubi->dev, UBI_NAME_STR"%d", ubi->ubi_num);
err = device_register(&ubi->dev);
if (err)
return err;
ubi_free_volume(ubi, ubi->volumes[i]);
}
+/**
+ * free_user_volumes - free all user volumes.
+ * @ubi: UBI device description object
+ *
+ * Normally the volumes are freed at the release function of the volume device
+ * objects. However, on error paths the volumes have to be freed before the
+ * device objects have been initialized.
+ */
+static void free_user_volumes(struct ubi_device *ubi)
+{
+ int i;
+
+ for (i = 0; i < ubi->vtbl_slots; i++)
+ if (ubi->volumes[i]) {
+ kfree(ubi->volumes[i]->eba_tbl);
+ kfree(ubi->volumes[i]);
+ }
+}
+
/**
* uif_init - initialize user interfaces for an UBI device.
* @ubi: UBI device description object
*
* This function returns zero in case of success and a negative error code in
- * case of failure.
+ * case of failure. Note, this function destroys all volumes if it failes.
*/
static int uif_init(struct ubi_device *ubi)
{
- int i, err;
+ int i, err, do_free = 0;
dev_t dev;
sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
ubi_assert(MINOR(dev) == 0);
cdev_init(&ubi->cdev, &ubi_cdev_operations);
- dbg_msg("%s major is %u", ubi->ubi_name, MAJOR(dev));
+ dbg_gen("%s major is %u", ubi->ubi_name, MAJOR(dev));
ubi->cdev.owner = THIS_MODULE;
err = cdev_add(&ubi->cdev, dev, 1);
out_volumes:
kill_volumes(ubi);
+ do_free = 0;
out_sysfs:
ubi_sysfs_close(ubi);
cdev_del(&ubi->cdev);
out_unreg:
+ if (do_free)
+ free_user_volumes(ubi);
unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1);
ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err);
return err;
}
/**
- * io_init - initialize I/O unit for a given UBI device.
+ * io_init - initialize I/O sub-system for a given UBI device.
* @ubi: UBI device description object
*
* If @ubi->vid_hdr_offset or @ubi->leb_start is zero, default offsets are
*/
ubi->peb_size = ubi->mtd->erasesize;
- ubi->peb_count = ubi->mtd->size / ubi->mtd->erasesize;
+ ubi->peb_count = mtd_div_by_eb(ubi->mtd->size, ubi->mtd);
ubi->flash_size = ubi->mtd->size;
if (ubi->mtd->block_isbad && ubi->mtd->block_markbad)
/**
* ubi_attach_mtd_dev - attach an MTD device.
- * @mtd_dev: MTD device description object
+ * @mtd: MTD device description object
* @ubi_num: number to assign to the new UBI device
* @vid_hdr_offset: VID header offset
*
int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
{
struct ubi_device *ubi;
- int i, err;
+ int i, err, do_free = 1;
/*
* Check if we already have the same MTD device attached.
if (!ubi_devices[ubi_num])
break;
if (ubi_num == UBI_MAX_DEVICES) {
- dbg_err("only %d UBI devices may be created", UBI_MAX_DEVICES);
+ dbg_err("only %d UBI devices may be created",
+ UBI_MAX_DEVICES);
return -ENFILE;
}
} else {
mutex_init(&ubi->buf_mutex);
mutex_init(&ubi->ckvol_mutex);
+ mutex_init(&ubi->mult_mutex);
mutex_init(&ubi->volumes_mutex);
spin_lock_init(&ubi->volumes_lock);
if (err)
goto out_free;
+ err = -ENOMEM;
ubi->peb_buf1 = vmalloc(ubi->peb_size);
if (!ubi->peb_buf1)
goto out_free;
ubi->peb_buf2 = vmalloc(ubi->peb_size);
if (!ubi->peb_buf2)
- goto out_free;
+ goto out_free;
#ifdef CONFIG_MTD_UBI_DEBUG
mutex_init(&ubi->dbg_buf_mutex);
ubi->dbg_peb_buf = vmalloc(ubi->peb_size);
if (!ubi->dbg_peb_buf)
- goto out_free;
+ goto out_free;
#endif
err = attach_by_scanning(ubi);
err = uif_init(ubi);
if (err)
- goto out_detach;
+ goto out_nofree;
ubi->bgt_thread = kthread_create(ubi_thread, ubi, ubi->bgt_name);
if (IS_ERR(ubi->bgt_thread)) {
ubi->beb_rsvd_pebs);
ubi_msg("max/mean erase counter: %d/%d", ubi->max_ec, ubi->mean_ec);
- /* Enable the background thread */
- if (!DBG_DISABLE_BGT) {
+ if (!DBG_DISABLE_BGT)
ubi->thread_enabled = 1;
- wake_up_process(ubi->bgt_thread);
- }
+ wake_up_process(ubi->bgt_thread);
ubi_devices[ubi_num] = ubi;
return ubi_num;
out_uif:
uif_close(ubi);
+out_nofree:
+ do_free = 0;
out_detach:
ubi_wl_close(ubi);
+ if (do_free)
+ free_user_volumes(ubi);
free_internal_volumes(ubi);
vfree(ubi->vtbl);
out_free:
module_exit(ubi_exit);
/**
- * bytes_str_to_int - convert a string representing number of bytes to an
- * integer.
+ * bytes_str_to_int - convert a number of bytes string into an integer.
* @str: the string to convert
*
* This function returns positive resulting integer in case of success and a
projects / linux-2.6-omap-h63xx.git / blobdiff