const struct ubi_device *ubi;
if (ubi_num < 0 || ubi_num >= UBI_MAX_DEVICES ||
- !ubi_devices[ubi_num]) {
+ !ubi_devices[ubi_num])
return -ENODEV;
- }
ubi = ubi_devices[ubi_num];
di->ubi_num = ubi->ubi_num;
{
int err;
struct ubi_volume_desc *desc;
- struct ubi_device *ubi = ubi_devices[ubi_num];
+ struct ubi_device *ubi;
struct ubi_volume *vol;
dbg_msg("open device %d volume %d, mode %d", ubi_num, vol_id, mode);
err = -ENODEV;
+ if (ubi_num < 0)
+ return ERR_PTR(err);
+
+ ubi = ubi_devices[ubi_num];
+
if (!try_module_get(THIS_MODULE))
return ERR_PTR(err);
- if (ubi_num < 0 || ubi_num >= UBI_MAX_DEVICES || !ubi)
+ if (ubi_num >= UBI_MAX_DEVICES || !ubi)
goto out_put;
err = -EINVAL;
}
EXPORT_SYMBOL_GPL(ubi_leb_unmap);
+/**
+ * ubi_leb_map - map logical erasblock to a physical eraseblock.
+ * @desc: volume descriptor
+ * @lnum: logical eraseblock number
+ * @dtype: expected data type
+ *
+ * This function maps an un-mapped logical eraseblock @lnum to a physical
+ * eraseblock. This means, that after a successfull invocation of this
+ * function the logical eraseblock @lnum will be empty (contain only %0xFF
+ * bytes) and be mapped to a physical eraseblock, even if an unclean reboot
+ * happens.
+ *
+ * This function returns zero in case of success, %-EBADF if the volume is
+ * damaged because of an interrupted update, %-EBADMSG if the logical
+ * eraseblock is already mapped, and other negative error codes in case of
+ * other failures.
+ */
+int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
+{
+ struct ubi_volume *vol = desc->vol;
+ struct ubi_device *ubi = vol->ubi;
+ int vol_id = vol->vol_id;
+
+ dbg_msg("unmap LEB %d:%d", vol_id, lnum);
+
+ if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
+ return -EROFS;
+
+ if (lnum < 0 || lnum >= vol->reserved_pebs)
+ return -EINVAL;
+
+ if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
+ dtype != UBI_UNKNOWN)
+ return -EINVAL;
+
+ if (vol->upd_marker)
+ return -EBADF;
+
+ if (vol->eba_tbl[lnum] >= 0)
+ return -EBADMSG;
+
+ return ubi_eba_write_leb(ubi, vol_id, lnum, NULL, 0, 0, dtype);
+}
+EXPORT_SYMBOL_GPL(ubi_leb_map);
+
/**
* ubi_is_mapped - check if logical eraseblock is mapped.
* @desc: volume descriptor