From: kbuild test robot <lkp@xxxxxxxxx> drivers/pci/controller/dwc/pci-exynos.c:95:1-3: WARNING: PTR_ERR_OR_ZERO can be used Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR Generated by: scripts/coccinelle/api/ptr_ret.cocci Fixes: 191d6f91f283 ("PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist") CC: Palmer Dabbelt <palmer@xxxxxxxxxx> Signed-off-by: kbuild test robot <lkp@xxxxxxxxx> --- tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 36487907f34131c7e3df5b1e6b30b4e3dfcdc0af commit: 191d6f91f283dfb007499bb8529d54c3ac434bd7 PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist pci-exynos.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) --- a/drivers/pci/controller/dwc/pci-exynos.c +++ b/drivers/pci/controller/dwc/pci-exynos.c @@ -92,10 +92,7 @@ static int exynos5440_pcie_get_mem_resou res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ep->mem_res->elbi_base = devm_ioremap_resource(dev, res); - if (IS_ERR(ep->mem_res->elbi_base)) - return PTR_ERR(ep->mem_res->elbi_base); - - return 0; + return PTR_ERR_OR_ZERO(ep->mem_res->elbi_base); } static int exynos5440_pcie_get_clk_resources(struct exynos_pcie *ep)