[SCSI] libfc: removes initializing fc_cpu_order and fc_cpu_mask per lport

Initializing these libfc globals per lport could mess up exch
allocation/free for existing lport.

So this patch moves their initialization to fc_setup_exch_mgr
so that these globals gets initialized only once for libfc.

Reported-by: Alex Lyakas <alexl@mellanox.co.il>
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 14 insertions, 10 deletions

diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index ae8f9e9ac958..bdae9a9e7ae9 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -2046,6 +2046,20 @@ int fc_exch_init(struct fc_lport *lp)
         if (!lp->tt.seq_exch_abort)
                 lp->tt.seq_exch_abort = fc_seq_exch_abort;
 
+        return 0;
+}
+EXPORT_SYMBOL(fc_exch_init);
+
+/**
+ * fc_setup_exch_mgr() - Setup an exchange manager
+ */
+int fc_setup_exch_mgr()
+{
+        fc_em_cachep = kmem_cache_create("libfc_em", sizeof(struct fc_exch),
+                                         0, SLAB_HWCACHE_ALIGN, NULL);
+        if (!fc_em_cachep)
+                return -ENOMEM;
+
         /*
          * Initialize fc_cpu_mask and fc_cpu_order. The
          * fc_cpu_mask is set for nr_cpu_ids rounded up
@@ -2070,16 +2084,6 @@ int fc_exch_init(struct fc_lport *lp)
 
         return 0;
 }
-EXPORT_SYMBOL(fc_exch_init);
-
-int fc_setup_exch_mgr(void)
-{
-        fc_em_cachep = kmem_cache_create("libfc_em", sizeof(struct fc_exch),
-                                         0, SLAB_HWCACHE_ALIGN, NULL);
-        if (!fc_em_cachep)
-                return -ENOMEM;
-        return 0;
-}
 
 void fc_destroy_exch_mgr(void)
 {