Re: scsi: qla2xxx: use dma_mapping_error to check map errors

[Madhani, Himanshu]

> On Aug 8, 2017, at 6:55 AM, Pan Bian <bianpan2016@xxxxxxx> wrote:
> 
> 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@xxxxxxx>
> ---
> 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 7c6d1a4..eafb709 100644
> --- a/drivers/scsi/qla2xxx/qla_mbx.c
> +++ b/drivers/scsi/qla2xxx/qla_mbx.c
> @@ -5817,7 +5817,7 @@ struct cs84xx_mgmt_cmd {
> 
> 	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;
> 	}
> -- 
> 1.9.1
> 
> 

Looks Good. Thanks for the patch 

Acked-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>

Thanks,
- Himanshu