1 files changed, 17 insertions, 34 deletions

diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index e5df0d4db67e..104e0fba7c43 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -488,7 +488,7 @@ static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp,
          */
         spin_lock_bh(&ep->ex_lock);
         ep->f_ctl = f_ctl & ~FC_FC_FIRST_SEQ;   /* not first seq */
-        if (f_ctl & (FC_FC_END_SEQ | FC_FC_SEQ_INIT))
+        if (f_ctl & FC_FC_SEQ_INIT)
                 ep->esb_stat &= ~ESB_ST_SEQ_INIT;
         spin_unlock_bh(&ep->ex_lock);
         return error;
@@ -676,9 +676,10 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport,
         }
         memset(ep, 0, sizeof(*ep));
 
-        cpu = smp_processor_id();
+        cpu = get_cpu();
         pool = per_cpu_ptr(mp->pool, cpu);
         spin_lock_bh(&pool->lock);
+        put_cpu();
         index = pool->next_index;
         /* allocate new exch from pool */
         while (fc_exch_ptr_get(pool, index)) {
@@ -734,19 +735,14 @@ err:
  * EM is selected when a NULL match function pointer is encountered
  * or when a call to a match function returns true.
  */
-static struct fc_exch *fc_exch_alloc(struct fc_lport *lport,
-                                     struct fc_frame *fp)
+static inline struct fc_exch *fc_exch_alloc(struct fc_lport *lport,
+                                            struct fc_frame *fp)
 {
         struct fc_exch_mgr_anchor *ema;
-        struct fc_exch *ep;
 
-        list_for_each_entry(ema, &lport->ema_list, ema_list) {
-                if (!ema->match || ema->match(fp)) {
-                        ep = fc_exch_em_alloc(lport, ema->mp);
-                        if (ep)
-                                return ep;
-                }
-        }
+        list_for_each_entry(ema, &lport->ema_list, ema_list)
+                if (!ema->match || ema->match(fp))
+                        return fc_exch_em_alloc(lport, ema->mp);
         return NULL;
 }
 
@@ -920,13 +916,9 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
          * Find or create the sequence.
          */
         if (fc_sof_is_init(fr_sof(fp))) {
-                sp = fc_seq_start_next(&ep->seq);
-                if (!sp) {
-                        reject = FC_RJT_SEQ_XS; /* exchange shortage */
-                        goto rel;
-                }
-                sp->id = fh->fh_seq_id;
+                sp = &ep->seq;
                 sp->ssb_stat |= SSB_ST_RESP;
+                sp->id = fh->fh_seq_id;
         } else {
                 sp = &ep->seq;
                 if (sp->id != fh->fh_seq_id) {
@@ -1250,9 +1242,6 @@ static void fc_exch_recv_req(struct fc_lport *lport, struct fc_exch_mgr *mp,
         struct fc_frame_header *fh = fc_frame_header_get(fp);
         struct fc_seq *sp = NULL;
         struct fc_exch *ep = NULL;
-        enum fc_sof sof;
-        enum fc_eof eof;
-        u32 f_ctl;
         enum fc_pf_rjt_reason reject;
 
         /* We can have the wrong fc_lport at this point with NPIV, which is a
@@ -1269,9 +1258,6 @@ static void fc_exch_recv_req(struct fc_lport *lport, struct fc_exch_mgr *mp,
         if (reject == FC_RJT_NONE) {
                 sp = fr_seq(fp);        /* sequence will be held */
                 ep = fc_seq_exch(sp);
-                sof = fr_sof(fp);
-                eof = fr_eof(fp);
-                f_ctl = ntoh24(fh->fh_f_ctl);
                 fc_seq_send_ack(sp, fp);
 
                 /*
@@ -1336,17 +1322,15 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
                 goto rel;
         }
         sof = fr_sof(fp);
+        sp = &ep->seq;
         if (fc_sof_is_init(sof)) {
-                sp = fc_seq_start_next(&ep->seq);
-                sp->id = fh->fh_seq_id;
                 sp->ssb_stat |= SSB_ST_RESP;
-        } else {
-                sp = &ep->seq;
-                if (sp->id != fh->fh_seq_id) {
-                        atomic_inc(&mp->stats.seq_not_found);
-                        goto rel;
-                }
+                sp->id = fh->fh_seq_id;
+        } else if (sp->id != fh->fh_seq_id) {
+                atomic_inc(&mp->stats.seq_not_found);
+                goto rel;
         }
+
         f_ctl = ntoh24(fh->fh_f_ctl);
         fr_seq(fp) = sp;
         if (f_ctl & FC_FC_SEQ_INIT)
@@ -1763,7 +1747,6 @@ static void fc_exch_els_rec(struct fc_seq *sp, struct fc_frame *rfp)
                 fc_exch_done(sp);
                 goto out;
         }
-        sp = fc_seq_start_next(sp);
         acc = fc_frame_payload_get(fp, sizeof(*acc));
         memset(acc, 0, sizeof(*acc));
         acc->reca_cmd = ELS_LS_ACC;
@@ -1944,7 +1927,7 @@ static void fc_exch_rrq(struct fc_exch *ep)
                 did = ep->sid;
 
         fc_fill_fc_hdr(fp, FC_RCTL_ELS_REQ, did,
-                       fc_host_port_id(lport->host), FC_TYPE_ELS,
+                       lport->port_id, FC_TYPE_ELS,
                        FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT, 0);
 
         if (fc_exch_seq_send(lport, fp, fc_exch_rrq_resp, NULL, ep,