From 0fd7d43fbc4aaf358005231a6bed27eb1c2f60c3 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sat, 1 Oct 2016 09:12:29 +0000 Subject: [PATCH] net: qcom/emac: fix return value check in emac_sgmii_config() In case of error, the function ioremap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Also add check for return value of platform_get_resource(). Fixes: 54e19bc74f33 ("net: qcom/emac: do not use devm on internal phy pdev") Signed-off-by: Wei Yongjun Acked-by: Timur Tabi Signed-off-by: David S. Miller --- drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c index 3d2c05a40d2c..75c1b530e39e 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c @@ -740,9 +740,14 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) /* Base address is the first address */ res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 0); + if (!res) { + ret = -EINVAL; + goto error_put_device; + } + phy->base = ioremap(res->start, resource_size(res)); - if (IS_ERR(phy->base)) { - ret = PTR_ERR(phy->base); + if (!phy->base) { + ret = -ENOMEM; goto error_put_device; } @@ -750,8 +755,8 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 1); if (res) { phy->digital = ioremap(res->start, resource_size(res)); - if (IS_ERR(phy->digital)) { - ret = PTR_ERR(phy->digital); + if (!phy->digital) { + ret = -ENOMEM; goto error_unmap_base; } } -- 2.20.1