1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index 1f6f15f0dce..0c4a07f11a5 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -1031,6 +1031,10 @@ static void bus_reset_tasklet(unsigned long data)
          * bit extra to get the actual number of self IDs.
          */
         self_id_count = (reg >> 3) & 0x3ff;
+        if (self_id_count == 0) {
+                fw_notify("inconsistent self IDs\n");
+                return;
+        }
         generation = (cond_le32_to_cpu(ohci->self_id_cpu[0]) >> 16) & 0xff;
         rmb();