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    firewire: reread config ROM when device reset the bus · c9755e14
    Stefan Richter 提交于
    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: NStefan Richter <stefanr@s5r6.in-berlin.de>
    c9755e14
fw-device.c 26.1 KB