firewire: reread config ROM when device reset the bus
When a device changes its configuration ROM, it announces this with a
bus reset. firewire-core has to check which node initiated a bus reset
and whether any unit directories went away or were added on this node.
Tested with an IOI FWB-IDE01AB which has its link-on bit set if bus
power is available but does not respond to ROM read requests if self
power is off. This implements
- recognition of the units if self power is switched on after fw-core
gave up the initial attempt to read the config ROM,
- shutdown of the units when self power is switched off.
Also tested with a second PC running Linux/ieee1394. When the eth1394
driver is inserted and removed on that node, fw-core now notices the
addition and removal of the IPv4 unit on the ieee1394 node.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-topology.h b/drivers/firewire/fw-topology.h
index cedc1ec..addb9f8 100644
--- a/drivers/firewire/fw-topology.h
+++ b/drivers/firewire/fw-topology.h
@@ -20,11 +20,12 @@
#define __fw_topology_h
enum {
- FW_NODE_CREATED = 0x00,
- FW_NODE_UPDATED = 0x01,
- FW_NODE_DESTROYED = 0x02,
- FW_NODE_LINK_ON = 0x03,
- FW_NODE_LINK_OFF = 0x04,
+ FW_NODE_CREATED,
+ FW_NODE_UPDATED,
+ FW_NODE_DESTROYED,
+ FW_NODE_LINK_ON,
+ FW_NODE_LINK_OFF,
+ FW_NODE_INITIATED_RESET,
};
struct fw_node {