From: Jack Wang <jinpu.wang@ionos.com>
Date: Fri, 26 Aug 2022 10:14:35 +0000 (+0200)
Subject: scsi: qlogicpti: Fix dma_map_sg() check
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9806d1b895f42c919620539b8e7621d73ea6d60d;p=linux.git

scsi: qlogicpti: Fix dma_map_sg() check

Add missing error check for dma_map_sg().

Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

Link: https://lore.kernel.org/r/20220826101435.79170-1-jinpu.wang@ionos.com
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c
index 57f2f4135a060..8c961ff03fcdf 100644
--- a/drivers/scsi/qlogicpti.c
+++ b/drivers/scsi/qlogicpti.c
@@ -909,7 +909,8 @@ static inline int load_cmd(struct scsi_cmnd *Cmnd, struct Command_Entry *cmd,
 		sg_count = dma_map_sg(&qpti->op->dev, sg,
 				      scsi_sg_count(Cmnd),
 				      Cmnd->sc_data_direction);
-
+		if (!sg_count)
+			return -1;
 		ds = cmd->dataseg;
 		cmd->segment_cnt = sg_count;