From: Wei Yongjun Date: Sat, 6 Aug 2016 01:01:24 +0000 (+0000) Subject: IB/hns: Fix return value check in hns_roce_get_cfg() X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=204f69ba64122b1ee6732bab8cfd71fe2d68c188;p=openwrt%2Fstaging%2Fblogic.git IB/hns: Fix return value check in hns_roce_get_cfg() 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 Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 5b42ec85efa0..6ead671966bd 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);