tree: https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git pci/dwc head: 2d614eea218333de679fb2f59681671bb88168c1 commit: 99e8fc7d35c810813915a4d998953d3c545df6b5 [5/7] PCI: visconti: Remove surplus dev_err() when using platform_get_irq_byname() config: riscv-buildonly-randconfig-r004-20211007 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 58b68e70ebf6308f982426a2618782f473218eed) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/commit/?id=99e8fc7d35c810813915a4d998953d3c545df6b5 git remote add lpieralisi-pci https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git git fetch --no-tags lpieralisi-pci pci/dwc git checkout 99e8fc7d35c810813915a4d998953d3c545df6b5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/pci/controller/dwc/pcie-visconti.c:282:17: error: unused variable 'dev' [-Werror,-Wunused-variable] struct device *dev = &pdev->dev; ^ 1 error generated. vim +/dev +282 drivers/pci/controller/dwc/pcie-visconti.c da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 276 da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 277 static int visconti_add_pcie_port(struct visconti_pcie *pcie, da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 278 struct platform_device *pdev) da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 279 { da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 280 struct dw_pcie *pci = &pcie->pci; da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 281 struct pcie_port *pp = &pci->pp; da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 @282 struct device *dev = &pdev->dev; da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 283 da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 284 pp->irq = platform_get_irq_byname(pdev, "intr"); 99e8fc7d35c810 Krzysztof Wilczyński 2021-10-01 285 if (pp->irq < 0) da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 286 return pp->irq; da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 287 da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 288 pp->ops = &visconti_pcie_host_ops; da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 289 da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 290 return dw_pcie_host_init(pp); da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 291 } da36024a4e838b Nobuhiro Iwamatsu 2021-08-11 292 :::::: The code at line 282 was first introduced by commit :::::: da36024a4e838b52408cf3d04999ae934728092a PCI: visconti: Add Toshiba Visconti PCIe host controller driver :::::: TO: Nobuhiro Iwamatsu :::::: CC: Bjorn Helgaas --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org