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path: root/drivers/firewire/fw-sbp2.c
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Diffstat (limited to 'drivers/firewire/fw-sbp2.c')
-rw-r--r--drivers/firewire/fw-sbp2.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 5d8411afcedb..ef0b9b419c27 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -1423,7 +1423,7 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
1423 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 1423 struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
1424 struct sbp2_command_orb *orb; 1424 struct sbp2_command_orb *orb;
1425 unsigned int max_payload; 1425 unsigned int max_payload;
1426 int retval = SCSI_MLQUEUE_HOST_BUSY; 1426 int generation, retval = SCSI_MLQUEUE_HOST_BUSY;
1427 1427
1428 /* 1428 /*
1429 * Bidirectional commands are not yet implemented, and unknown 1429 * Bidirectional commands are not yet implemented, and unknown
@@ -1467,6 +1467,9 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
1467 if (cmd->sc_data_direction == DMA_FROM_DEVICE) 1467 if (cmd->sc_data_direction == DMA_FROM_DEVICE)
1468 orb->request.misc |= cpu_to_be32(COMMAND_ORB_DIRECTION); 1468 orb->request.misc |= cpu_to_be32(COMMAND_ORB_DIRECTION);
1469 1469
1470 generation = device->generation;
1471 smp_rmb(); /* sbp2_map_scatterlist looks at tgt->address_high */
1472
1470 if (scsi_sg_count(cmd) && sbp2_map_scatterlist(orb, device, lu) < 0) 1473 if (scsi_sg_count(cmd) && sbp2_map_scatterlist(orb, device, lu) < 0)
1471 goto out; 1474 goto out;
1472 1475
@@ -1479,7 +1482,7 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
1479 if (dma_mapping_error(device->card->device, orb->base.request_bus)) 1482 if (dma_mapping_error(device->card->device, orb->base.request_bus))
1480 goto out; 1483 goto out;
1481 1484
1482 sbp2_send_orb(&orb->base, lu, lu->tgt->node_id, lu->generation, 1485 sbp2_send_orb(&orb->base, lu, lu->tgt->node_id, generation,
1483 lu->command_block_agent_address + SBP2_ORB_POINTER); 1486 lu->command_block_agent_address + SBP2_ORB_POINTER);
1484 retval = 0; 1487 retval = 0;
1485 out: 1488 out: