diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/fw-topology.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/firewire/fw-topology.c b/drivers/firewire/fw-topology.c index c9be6e6948c4..e7520e4bd6bc 100644 --- a/drivers/firewire/fw-topology.c +++ b/drivers/firewire/fw-topology.c @@ -518,6 +518,18 @@ fw_core_handle_bus_reset(struct fw_card *card, struct fw_node *local_node; unsigned long flags; + /* + * If the selfID buffer is not the immediate successor of the + * previously processed one, we cannot reliably compare the + * old and new topologies. + */ + if ((generation & 0xff) != ((card->generation + 1) & 0xff) && + card->local_node != NULL) { + fw_notify("skipped bus generations, destroying all nodes\n"); + fw_destroy_nodes(card); + card->bm_retries = 0; + } + spin_lock_irqsave(&card->lock, flags); card->node_id = node_id; |