+ int inst = a->info.container_member;
+ struct intel_super *super = a->container->sb;
+ struct imsm_dev *dev = get_imsm_dev(super->mpb, inst);
+ struct imsm_map *map = dev->vol.map;
+ struct imsm_disk *disk;
+ __u32 status;
+ int failed = 0;
+ int new_failure = 0;
+
+ if (n > map->num_members)
+ fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n",
+ n, map->num_members - 1);
+
+ if (n < 0)
+ return;
+
+ fprintf(stderr, "imsm: set_disk %d:%x\n", n, state);
+
+ disk = get_imsm_disk(super->mpb, get_imsm_disk_idx(map, n));
+
+ /* check if we have seen this failure before */
+ status = __le32_to_cpu(disk->status);
+ if ((state & DS_FAULTY) && !(status & FAILED_DISK)) {
+ status |= FAILED_DISK;
+ disk->status = __cpu_to_le32(status);
+ new_failure = 1;
+ }
+
+ /**
+ * the number of failures have changed, count up 'failed' to determine
+ * degraded / failed status
+ */
+ if (new_failure && map->map_state != IMSM_T_STATE_FAILED)
+ failed = imsm_count_failed(super->mpb, map);
+
+ if (failed)
+ map->map_state = imsm_check_degraded(super->mpb, inst, failed);
+
+ if (new_failure)
+ super->updates_pending++;