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authorPan Bian <bianpan2016@163.com>2017-08-08 16:55:30 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2017-08-11 02:55:35 +0300
commit0b2ce198fa3a6a0c885e888010b7278778df2dab (patch)
tree216268a82543f9340e07ff9e6be09d6770d1ca23 /drivers/scsi/qla2xxx/qla_mbx.c
parentcf99dc30bcc56c33243b5bbfef9d8ea943dd2e1c (diff)
downloadlinux-0b2ce198fa3a6a0c885e888010b7278778df2dab.tar.xz
scsi: qla2xxx: use dma_mapping_error to check map errors
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>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_mbx.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_mbx.c2
1 files changed, 1 insertions, 1 deletions
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;
}