[SCSI] lpfc 8.3.9: Fix locking and memory issues

- Use the hbalock when changing the fc_flag.
- Use the host_lock when changeing the sli_flag.
- Prevent NULL pointer dereference after dma_alloc_coherent failure.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c
index 6c1d8b3fe8cc..6c4dce1a30ca 100644
--- a/drivers/scsi/lpfc/lpfc_mbox.c
+++ b/drivers/scsi/lpfc/lpfc_mbox.c
@@ -1707,7 +1707,8 @@ lpfc_sli4_config(struct lpfc_hba *phba, struct lpfcMboxq *mbox,
                                 alloc_len - sizeof(union  lpfc_sli4_cfg_shdr);
         }
         /* The sub-header is in DMA memory, which needs endian converstion */
-        lpfc_sli_pcimem_bcopy(cfg_shdr, cfg_shdr,
+        if (cfg_shdr)
+                lpfc_sli_pcimem_bcopy(cfg_shdr, cfg_shdr,
                               sizeof(union  lpfc_sli4_cfg_shdr));
 
         return alloc_len;