[PATCH] scsi: remove meaningless scsi_cmnd->serial_number_at_timeout field

scsi_cmnd->serial_number_at_timeout doesn't serve any purpose
anymore.  All serial_number == serial_number_at_timeout tests
are always true in abort callbacks.  Kill the field.  Also, as
->pid always equals ->serial_number and ->serial_number
doesn't have any special meaning anymore, update comments
above ->serial_number accordingly.  Once we remove all uses of
this field from all lldd's, this field should go.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 95de4d0f4fd..05d2bd075fd 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -686,7 +686,6 @@ void scsi_init_cmd_from_req(struct scsi_cmnd *cmd, struct scsi_request *sreq)
         cmd->request = sreq->sr_request;
         memcpy(cmd->data_cmnd, sreq->sr_cmnd, sizeof(cmd->data_cmnd));
         cmd->serial_number = 0;
-        cmd->serial_number_at_timeout = 0;
         cmd->bufflen = sreq->sr_bufflen;
         cmd->buffer = sreq->sr_buffer;
         cmd->retries = 0;
@@ -765,7 +764,6 @@ void __scsi_done(struct scsi_cmnd *cmd)
          * Set the serial numbers back to zero
          */
         cmd->serial_number = 0;
-        cmd->serial_number_at_timeout = 0;
         cmd->state = SCSI_STATE_BHQUEUE;
         cmd->owner = SCSI_OWNER_BH_HANDLER;