2 files changed, 26 insertions, 0 deletions

diff --git a/drivers/ieee1394/hosts.h b/drivers/ieee1394/hosts.h
index 38f42112dff0..ae9b02cc013f 100644
--- a/drivers/ieee1394/hosts.h
+++ b/drivers/ieee1394/hosts.h
@@ -41,6 +41,7 @@ struct hpsb_host {
         /* this nodes state */
         unsigned in_bus_reset:1;
         unsigned is_shutdown:1;
+        unsigned resume_packet_sent:1;
 
         /* this nodes' duties on the bus */
         unsigned is_root:1;
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index 3f0917bbd7f5..b56934edd62b 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -1410,6 +1410,24 @@ static void nodemgr_node_probe(struct host_info *hi, int generation)
         return;
 }
 
+static int nodemgr_send_resume_packet(struct hpsb_host *host)
+{
+        struct hpsb_packet *packet;
+        int ret = 1;
+
+        packet = hpsb_make_phypacket(host,
+                        0x003c0000 | NODEID_TO_NODE(host->node_id) << 24);
+        if (packet) {
+                packet->no_waiter = 1;
+                packet->generation = get_hpsb_generation(host);
+                ret = hpsb_send_packet(packet);
+        }
+        if (ret)
+                HPSB_WARN("fw-host%d: Failed to broadcast resume packet",
+                          host->id);
+        return ret;
+}
+
 /* Because we are a 1394a-2000 compliant IRM, we need to inform all the other
  * nodes of the broadcast channel.  (Really we're only setting the validity
  * bit). Other IRM responsibilities go in here as well. */
@@ -1460,6 +1478,13 @@ static int nodemgr_do_irm_duties(struct hpsb_host *host, int cycles)
                 }
         }
 
+        /* Some devices suspend their ports while being connected to an inactive
+         * host adapter, i.e. if connected before the low-level driver is
+         * loaded.  They become visible either when physically unplugged and
+         * replugged, or when receiving a resume packet.  Send one once. */
+        if (!host->resume_packet_sent && !nodemgr_send_resume_packet(host))
+                host->resume_packet_sent = 1;
+
         return 1;
 }