diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/ohci.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index bffc2ad7ecab..b6977149394e 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1860,8 +1860,22 @@ static void bus_reset_work(struct work_struct *work) for (i = 1, j = 0; j < self_id_count; i += 2, j++) { if (ohci->self_id_cpu[i] != ~ohci->self_id_cpu[i + 1]) { - fw_notify("inconsistent self IDs\n"); - return; + /* + * If the invalid data looks like a cycle start packet, + * it's likely to be the result of the cycle master + * having a wrong gap count. In this case, the self IDs + * so far are valid and should be processed so that the + * bus manager can then correct the gap count. + */ + if (cond_le32_to_cpu(ohci->self_id_cpu[i]) + == 0xffff008f) { + fw_notify("ignoring spurious self IDs\n"); + self_id_count = j; + break; + } else { + fw_notify("inconsistent self IDs\n"); + return; + } } ohci->self_id_buffer[j] = cond_le32_to_cpu(ohci->self_id_cpu[i]); |