Commit cf76d3de authored May 22, 2015 by James Smart Committed by Sasha Levin Sep 28, 2015

lpfc: Fix scsi prep dma buf error.



[ Upstream commit 5116fbf136ea21b8678a85eee5c03508736ada9f ]

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 <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

parent 573f4d61

drivers/scsi/lpfc/lpfc_scsi.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3380,7 +3380,7 @@ 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 */