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path: root/drivers/firewire/fw-ohci.c
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Diffstat (limited to 'drivers/firewire/fw-ohci.c')
-rw-r--r--drivers/firewire/fw-ohci.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index 1f6f15f0dce2..0c4a07f11a59 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();