From c8a119779f5609de8dcd98630f71cc7f1b2e4e8c Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 29 Apr 2020 01:50:27 +0000 Subject: [PATCH] PCI: dwc: pci-dra7xx: Use devm_platform_ioremap_resource_byname() platform_get_resource() may fail and return NULL, so we had better check its return value to avoid a NULL pointer dereference a bit later in the code. Fix it to use devm_platform_ioremap_resource_byname() instead of calling platform_get_resource_byname() and devm_ioremap(). Link: https://lore.kernel.org/r/20200429015027.134485-1-weiyongjun1@huawei.com Signed-off-by: Wei Yongjun [lorenzo.pieralisi@arm.com: commit log] Signed-off-by: Lorenzo Pieralisi --- drivers/pci/controller/dwc/pci-dra7xx.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c index 3b0e58f2de58..6184ebc9392d 100644 --- a/drivers/pci/controller/dwc/pci-dra7xx.c +++ b/drivers/pci/controller/dwc/pci-dra7xx.c @@ -840,7 +840,6 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev) struct phy **phy; struct device_link **link; void __iomem *base; - struct resource *res; struct dw_pcie *pci; struct dra7xx_pcie *dra7xx; struct device *dev = &pdev->dev; @@ -877,10 +876,9 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev) return irq; } - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ti_conf"); - base = devm_ioremap(dev, res->start, resource_size(res)); - if (!base) - return -ENOMEM; + base = devm_platform_ioremap_resource_byname(pdev, "ti_conf"); + if (IS_ERR(base)) + return PTR_ERR(base); phy_count = of_property_count_strings(np, "phy-names"); if (phy_count < 0) { -- 2.39.5