tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-linux-5.4.y head: 90e46f5ea1f52782440496e14fe7ccb72bbd8b04 commit: cff21cf22081ec4f0619d405017269f716ddae52 [3421/10779] PCI: dwc: pci-dra7xx: Fix MSI IRQ handling config: riscv-randconfig-r033-20201016 (attached as .config) compiler: riscv64-linux-gcc (GCC) 9.3.0 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 git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git git fetch --no-tags ti ti-linux-5.4.y git checkout cff21cf22081ec4f0619d405017269f716ddae52 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/pci/controller/dwc/pci-dra7xx.c: In function 'dra7xx_pcie_msi_irq_handler': 274 | chained_irq_enter(chip, desc); | ^~~~~~~~~~~~~~~~~ 308 | chained_irq_exit(chip, desc); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/chained_irq_enter +274 drivers/pci/controller/dwc/pci-dra7xx.c 263 264 static void dra7xx_pcie_msi_irq_handler(struct irq_desc *desc) 265 { 266 struct irq_chip *chip = irq_desc_get_chip(desc); 267 struct dra7xx_pcie *dra7xx; 268 struct dw_pcie *pci; 269 struct pcie_port *pp; 270 unsigned long reg; 271 u32 virq, bit; 272 int count = 0; 273 275 276 pp = irq_desc_get_handler_data(desc); 277 pci = to_dw_pcie_from_pp(pp); 278 dra7xx = to_dra7xx_pcie(pci); 279 280 reg = dra7xx_pcie_readl(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI); 281 dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI, reg); 282 283 switch (reg) { 284 case MSI: 285 /** 286 * Need to make sure all MSI status bits read 0 before 287 * exiting. Else, new MSI IRQs are not registered by the 288 * wrapper. Have an upperbound for the loop and exit the 289 * IRQ in case of IRQ flood to avoid locking up system 290 * in interrupt context. 291 */ 292 while (dra7xx_pcie_handle_msi_irq(pp) && count < 1000) 293 count++; 294 295 break; 296 case INTA: 297 case INTB: 298 case INTC: 299 case INTD: 300 for_each_set_bit(bit, &reg, PCI_NUM_INTX) { 301 virq = irq_find_mapping(dra7xx->irq_domain, bit); 302 if (virq) 303 generic_handle_irq(virq); 304 } 305 break; 306 } 307 309 } 310 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org