diff options
Diffstat (limited to 'drivers/firewire/fw-topology.c')
| -rw-r--r-- | drivers/firewire/fw-topology.c | 65 |
1 files changed, 42 insertions, 23 deletions
diff --git a/drivers/firewire/fw-topology.c b/drivers/firewire/fw-topology.c index 018c6b8afba6..c26d5d5e8d53 100644 --- a/drivers/firewire/fw-topology.c +++ b/drivers/firewire/fw-topology.c @@ -1,6 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-topology.c - Incremental bus scan, based on bus topology +/* + * Incremental bus scan, based on bus topology * * Copyright (C) 2004-2006 Kristian Hoegsberg <krh@bitplanet.net> * @@ -69,10 +68,12 @@ static u32 *count_ports(u32 *sid, int *total_port_count, int *child_port_count) sid++; q = *sid; - /* Check that the extra packets actually are + /* + * Check that the extra packets actually are * extended self ID packets and that the * sequence numbers in the extended self ID - * packets increase as expected. */ + * packets increase as expected. + */ if (!self_id_extended(q) || seq != self_id_ext_sequence(q)) @@ -113,7 +114,8 @@ static struct fw_node *fw_node_create(u32 sid, int port_count, int color) return node; } -/* Compute the maximum hop count for this node and it's children. The +/* + * Compute the maximum hop count for this node and it's children. The * maximum hop count is the maximum number of connections between any * two nodes in the subtree rooted at this node. We need this for * setting the gap count. As we build the tree bottom up in @@ -202,8 +204,10 @@ static struct fw_node *build_tree(struct fw_card *card, return NULL; } - /* Seek back from the top of our stack to find the - * start of the child nodes for this node. */ + /* + * Seek back from the top of our stack to find the + * start of the child nodes for this node. + */ for (i = 0, h = &stack; i < child_port_count; i++) h = h->prev; child = fw_node(h); @@ -230,7 +234,8 @@ static struct fw_node *build_tree(struct fw_card *card, for (i = 0; i < port_count; i++) { switch (get_port_type(sid, i)) { case SELFID_PORT_PARENT: - /* Who's your daddy? We dont know the + /* + * Who's your daddy? We dont know the * parent node at this time, so we * temporarily abuse node->color for * remembering the entry in the @@ -245,8 +250,10 @@ static struct fw_node *build_tree(struct fw_card *card, case SELFID_PORT_CHILD: node->ports[i].node = child; - /* Fix up parent reference for this - * child node. */ + /* + * Fix up parent reference for this + * child node. + */ child->ports[child->color].node = node; child->color = card->color; child = fw_node(child->link.next); @@ -254,9 +261,11 @@ static struct fw_node *build_tree(struct fw_card *card, } } - /* Check that the node reports exactly one parent + /* + * Check that the node reports exactly one parent * port, except for the root, which of course should - * have no parents. */ + * have no parents. + */ if ((next_sid == end && parent_count != 0) || (next_sid < end && parent_count != 1)) { fw_error("Parent port inconsistency for node %d: " @@ -269,9 +278,11 @@ static struct fw_node *build_tree(struct fw_card *card, list_add_tail(&node->link, &stack); stack_depth += 1 - child_port_count; - /* If all PHYs does not report the same gap count + /* + * If all PHYs does not report the same gap count * setting, we fall back to 63 which will force a gap - * count reconfiguration and a reset. */ + * count reconfiguration and a reset. + */ if (self_id_gap_count(q) != gap_count) gap_count = 63; @@ -427,9 +438,11 @@ update_tree(struct fw_card *card, struct fw_node *root) for (i = 0; i < node0->port_count; i++) { if (node0->ports[i].node && node1->ports[i].node) { - /* This port didn't change, queue the + /* + * This port didn't change, queue the * connected node for further - * investigation. */ + * investigation. + */ if (node0->ports[i].node->color == card->color) continue; list_add_tail(&node0->ports[i].node->link, @@ -437,19 +450,23 @@ update_tree(struct fw_card *card, struct fw_node *root) list_add_tail(&node1->ports[i].node->link, &list1); } else if (node0->ports[i].node) { - /* The nodes connected here were + /* + * The nodes connected here were * unplugged; unref the lost nodes and * queue FW_NODE_LOST callbacks for - * them. */ + * them. + */ for_each_fw_node(card, node0->ports[i].node, report_lost_node); node0->ports[i].node = NULL; } else if (node1->ports[i].node) { - /* One or more node were connected to + /* + * One or more node were connected to * this port. Move the new nodes into * the tree and queue FW_NODE_CREATED - * callbacks for them. */ + * callbacks for them. + */ move_tree(node0, node1, i); for_each_fw_node(card, node0->ports[i].node, report_found_node); @@ -486,9 +503,11 @@ fw_core_handle_bus_reset(struct fw_card *card, spin_lock_irqsave(&card->lock, flags); - /* If the new topology has a different self_id_count the topology + /* + * If the new topology has a different self_id_count the topology * changed, either nodes were added or removed. In that case we - * reset the IRM reset counter. */ + * reset the IRM reset counter. + */ if (card->self_id_count != self_id_count) card->bm_retries = 0; |