From: Colin Ian King <colin.king@xxxxxxxxxxxxx> The call to platform_get_resource_byname can potentially return null, so add a null pointer check to avoid a null pointer dereference issue. Addresses-Coverity: ("Dereference null return") Fixes: 441903d9e8f0 ("PCI: mediatek-gen3: Add MediaTek Gen3 driver for MT8192") Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx> --- drivers/pci/controller/pcie-mediatek-gen3.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index 20165e4a75b2..3c5b97716d40 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -721,6 +721,8 @@ static int mtk_pcie_parse_port(struct mtk_pcie_port *port) int ret; regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcie-mac"); + if (!regs) + return -EINVAL; port->base = devm_ioremap_resource(dev, regs); if (IS_ERR(port->base)) { dev_err(dev, "failed to map register base\n"); -- 2.30.2