From: Pan Bian <bianpan2016@163.com>
Date: Tue, 8 Aug 2017 21:55:30 +0800
Subject: scsi: qla2xxx: use dma_mapping_error to check map errors
Patch-mainline: v4.14-rc1
Git-commit: 0b2ce198fa3a6a0c885e888010b7278778df2dab
References: FATE#322910
The return value of dma_map_single() should be checked by
dma_mapping_error(). However, in function qla26xx_dport_diagnostics(), its
return value is checked against NULL, which could result in failures.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/scsi/qla2xxx/qla_mbx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 28728c49d8df..1f91b87b6416 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -5809,7 +5809,7 @@ qla26xx_dport_diagnostics(scsi_qla_host_t *vha,
dd_dma = dma_map_single(&vha->hw->pdev->dev,
dd_buf, size, DMA_FROM_DEVICE);
- if (!dd_dma) {
+ if (dma_mapping_error(&vha->hw->pdev->dev, dd_dma)) {
ql_log(ql_log_warn, vha, 0x1194, "Failed to map dma buffer.\n");
return QLA_MEMORY_ALLOC_FAILED;
}
--
2.12.3