diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/core-card.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c index faf2eee473b9..ef6f2616cac7 100644 --- a/drivers/firewire/core-card.c +++ b/drivers/firewire/core-card.c @@ -369,10 +369,8 @@ static void fw_card_bm_work(struct work_struct *work) goto out; } else if (root_device_is_cmc) { /* - * FIXME: I suppose we should set the cmstr bit in the - * STATE_CLEAR register of this node, as described in - * 1394-1995, 8.4.2.6. Also, send out a force root - * packet for this node. + * We will send out a force root packet for this + * node as part of the gap count optimization. */ new_root_id = root_id; } else { @@ -413,11 +411,25 @@ static void fw_card_bm_work(struct work_struct *work) fw_send_phy_config(card, new_root_id, generation, gap_count); fw_core_initiate_bus_reset(card, 1); /* Will allocate broadcast channel after the reset. */ - } else { - if (local_id == irm_id) - allocate_broadcast_channel(card, generation); + goto out; } + if (root_device_is_cmc) { + /* + * Make sure that the cycle master sends cycle start packets. + */ + card->bm_transaction_data[0] = cpu_to_be32(CSR_STATE_BIT_CMSTR); + rcode = fw_run_transaction(card, TCODE_WRITE_QUADLET_REQUEST, + root_id, generation, SCODE_100, + CSR_REGISTER_BASE + CSR_STATE_SET, + card->bm_transaction_data, sizeof(u32)); + if (rcode == RCODE_GENERATION) + goto out; + } + + if (local_id == irm_id) + allocate_broadcast_channel(card, generation); + out: fw_node_put(root_node); out_put_card: |