firewire: cdev: fix fw_cdev_event_bus_reset.bm_node_id

[net-next-2.6.git] / drivers / firewire / core-card.c

diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index 11fc81500f8287da0b7dc2b42dfaa164fddaa931..6c316cfe70c472d6bc93bb158bf946c5a4d355c3 100644 (file)
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -239,7 +239,7 @@ static void fw_card_bm_work(struct work_struct *work)
        struct fw_card *card = container_of(work, struct fw_card, work.work);
        struct fw_device *root_device;
        struct fw_node *root_node;
-       int root_id, new_root_id, irm_id, local_id;
+       int root_id, new_root_id, irm_id, bm_id, local_id;
        int gap_count, generation, grace, rcode;
        bool do_reset = false;
        bool root_device_is_running;
@@ -301,9 +301,15 @@ static void fw_card_bm_work(struct work_struct *work)
                        /* Another bus reset, BM work has been rescheduled. */
                        goto out;
 
-               if (rcode == RCODE_COMPLETE &&
-                   card->bm_transaction_data[0] != cpu_to_be32(0x3f)) {
+               bm_id = be32_to_cpu(card->bm_transaction_data[0]);
 
+               spin_lock_irq(&card->lock);
+               if (rcode == RCODE_COMPLETE && generation == card->generation)
+                       card->bm_node_id =
+                           bm_id == 0x3f ? local_id : 0xffc0 | bm_id;
+               spin_unlock_irq(&card->lock);
+
+               if (rcode == RCODE_COMPLETE && bm_id != 0x3f) {
                        /* Somebody else is BM.  Only act as IRM. */
                        if (local_id == irm_id)
                                allocate_broadcast_channel(card, generation);