[SCSI] libfc: Remove the FC_EM_DBG macro

Currently there is a 1:1 relationship between the lport
and exchange manager. This macro takes an EM as an argument
and determines the lport from it. However, later patches
will use an EM list per lport, so we will no longer have
this 1:1 relationship- this macro must change.

The FC_EM_DBG macro is rarely used. There are four callers,
two can use FC_LPORT_DBG instead and two can be removed
since they're not necessary. This patch makes those changes
and removes the macro.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/libfc/fc_exch.c

@@ -1129,7 +1129,7 @@ static void fc_exch_recv_req(struct fc_lport *lp, struct fc_exch_mgr *mp,
 			lp->tt.lport_recv(lp, sp, fp);
 		fc_exch_release(ep);	/* release from lookup */
 	} else {
-		FC_EM_DBG(mp, "exch/seq lookup failed: reject %x\n", reject);
+		FC_LPORT_DBG(lp, "exch/seq lookup failed: reject %x\n", reject);
 		fc_frame_free(fp);
 	}
 }
@@ -1235,13 +1235,12 @@ static void fc_exch_recv_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
 	struct fc_seq *sp;
 
 	sp = fc_seq_lookup_orig(mp, fp);	/* doesn't hold sequence */
-	if (!sp) {
+
+	if (!sp)
 		atomic_inc(&mp->stats.xid_not_found);
-		FC_EM_DBG(mp, "seq lookup failed\n");
-	} else {
+	else
 		atomic_inc(&mp->stats.non_bls_resp);
-		FC_EM_DBG(mp, "non-BLS response to sequence");
-	}
+
 	fc_frame_free(fp);
 }
 
@@ -1950,7 +1949,7 @@ void fc_exch_recv(struct fc_lport *lp, struct fc_exch_mgr *mp,
 			fc_exch_recv_req(lp, mp, fp);
 		break;
 	default:
-		FC_EM_DBG(mp, "dropping invalid frame (eof %x)", fr_eof(fp));
+		FC_LPORT_DBG(lp, "dropping invalid frame (eof %x)", fr_eof(fp));
 		fc_frame_free(fp);
 		break;
 	}

include/scsi/libfc.h

@@ -88,12 +88,6 @@ do {									\
 				(pkt)->lp->host->host_no,		\
 				pkt->rport->port_id, ##args))
 
-#define FC_EM_DBG(em, fmt, args...)					\
-	FC_CHECK_LOGGING(FC_EM_LOGGING,					\
-			 printk(KERN_INFO "host%u: em: " fmt,		\
-				(em)->lp->host->host_no,		\
-				##args))
-
 #define FC_EXCH_DBG(exch, fmt, args...)					\
 	FC_CHECK_LOGGING(FC_EXCH_LOGGING,				\
 			 printk(KERN_INFO "host%u: xid %4x: " fmt,	\