linux-kernel - [patch 1/2 -resend] SCSI: advansys: handle errors from scsi_dma

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Date:	Wed, 27 Jun 2012 12:00:56 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Matthew Wilcox <matthew@....cx>
Cc:	"James E.J. Bottomley" <JBottomley@...allels.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch 1/2 -resend] SCSI: advansys: handle errors from scsi_dma_map()

scsi_dma_map() returns -ENOMEM on error.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
Originally sent on Tue, 20 Sep 2011.

diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
index 374c4ed..b2c3a1a 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -8426,6 +8426,12 @@ 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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