[kbuild-all] [arm-platforms:irq/domain_cleanup 30/39] drivers/pci/controller/pci-tegra.c:1559:8: warning: variable 'ret' is uninitialized when used here

tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/domain_cleanup head: 0175d864077c1900b27ffb2d1aff4f736548e711 commit: 7c8327614b2e21be95b1a486f93d907aed885557 [30/39] PCI: Bulk conversion to generic_handle_domain_irq() config: arm64-randconfig-r004-20210517 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0a34ff8bcb1df16fe7d643ccbe4567b2162c5024) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/com... git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git git fetch --no-tags arm-platforms irq/domain_cleanup git checkout 7c8327614b2e21be95b1a486f93d907aed885557 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): if (ret) { ^~~ drivers/pci/controller/pci-tegra.c:1556:11: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +/ret +1559 drivers/pci/controller/pci-tegra.c 1539 1540 static void tegra_pcie_msi_irq(struct irq_desc *desc) 1541 { 1542 struct tegra_pcie *pcie = irq_desc_get_handler_data(desc); 1543 struct irq_chip *chip = irq_desc_get_chip(desc); 1544 struct tegra_msi *msi = &pcie->msi; 1545 struct device *dev = pcie->dev; 1546 unsigned int i; 1547 1548 chained_irq_enter(chip, desc); 1549 1550 for (i = 0; i < 8; i++) { 1551 unsigned long reg = afi_readl(pcie, AFI_MSI_VEC(i)); 1552 1553 while (reg) { 1554 unsigned int offset = find_first_bit(&reg, 32); 1555 unsigned int index = i * 32 + offset; 1556 int ret; 1557 1558 generic_handle_domain_irq(msi->domain->parent, index); 1560 /* 1561 * that's weird who triggered this? 1562 * just clear it 1563 */ 1564 dev_info(dev, "unexpected MSI\n"); 1565 afi_writel(pcie, BIT(index % 32), AFI_MSI_VEC(index)); 1566 } 1567 1568 /* see if there's any more pending in this vector */ 1569 reg = afi_readl(pcie, AFI_MSI_VEC(i)); 1570 } 1571 } 1572 1573 chained_irq_exit(chip, desc); 1574 } 1575 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org