In case of error, the function devm_ioremap_resource() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <weiyj.lk@xxxxxxxxx> --- drivers/infiniband/hw/hns/hns_roce_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 5b42ec8..6ead671 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -715,8 +715,8 @@ static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev) res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0); hr_dev->reg_base = devm_ioremap_resource(dev, res); - if (!hr_dev->reg_base) - return -ENOMEM; + if (IS_ERR(hr_dev->reg_base)) + return PTR_ERR(hr_dev->reg_base); for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) { net_node = of_parse_phandle(np, "eth-handle", i); -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html