From 5116fbf136ea21b8678a85eee5c03508736ada9f Mon Sep 17 00:00:00 2001 From: James Smart Date: Fri, 22 May 2015 10:42:39 -0400 Subject: [PATCH] lpfc: Fix scsi prep dma buf error. Didn't check for less-than-or-equal zero. Means we may later call scsi_dma_unmap() even though we don't have valid mappings. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Reviewed-by: Hannes Reinecke Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 4a2a81875cfe..b3b195ff64fe 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -3257,7 +3257,7 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) */ nseg = scsi_dma_map(scsi_cmnd); - if (unlikely(!nseg)) + if (unlikely(nseg <= 0)) return 1; sgl += 1; /* clear the last flag in the fcp_rsp map entry */ -- 2.20.1