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-rw-r--r--drivers/firewire/ohci.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 76b321bb73f..5d524254499 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -1279,8 +1279,8 @@ static void bus_reset_tasklet(unsigned long data)
* the inverted quadlets and a header quadlet, we shift one
* bit extra to get the actual number of self IDs.
*/
- self_id_count = (reg >> 3) & 0x3ff;
- if (self_id_count == 0) {
+ self_id_count = (reg >> 3) & 0xff;
+ if (self_id_count == 0 || self_id_count > 252) {
fw_notify("inconsistent self IDs\n");
return;
}