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-rw-r--r--drivers/firewire/ohci.c18
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]);