[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>
diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
index edeb333..04cb5c4 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -9198,9 +9198,8 @@
         s->use_sg, s->sglist_len, s->abort_reason);
 
     printk(
-" serial_number 0x%x, serial_number_at_timeout 0x%x, retries %d, allowed %d\n",
-        (unsigned) s->serial_number, (unsigned) s->serial_number_at_timeout,
-         s->retries, s->allowed);
+" serial_number 0x%x, retries %d, allowed %d\n",
+        (unsigned) s->serial_number, s->retries, s->allowed);
 
     printk(
 " timeout_per_command %d, timeout_total %d, timeout %d\n",