scsi: qlogicpti: Fix dma_map_sg() check

Add missing error check for dma_map_sg(). Cc: "James E.J. Bottomley" <[email protected]> Cc: "Martin K. Petersen" <[email protected]> Cc: [email protected] Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jack Wang <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
caleberi · Sep 7, 2022 · 9806d1b · 9806d1b
1 parent 68a3a91
commit 9806d1b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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;