[patch 1/2] SCSI: advansys: handle errors from scsi_dma_map()

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scsi_dma_map() returns -ENOMEM on error.

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>

diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
index bfd618a..04035af 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -8427,6 +8427,12 @@ static int asc_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
 
 	/* Build ASC_SCSI_Q */
 	use_sg = scsi_dma_map(scp);
+	if (use_sg < 0) {
+		scsi_dma_unmap(scp);
+		scp->result = HOST_BYTE(DID_SOFT_ERROR);
+		return ASC_ERROR;
+	}
+
 	if (use_sg != 0) {
 		int sgcnt;
 		struct scatterlist *slp;
--
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