tree: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git controller/dwc-cpu-addr-fixup head: 40b96cba38232460c691b52bbf9183f9e4d34914 commit: af175b4797cd4e3e8ff22a4e3c6924443986b797 [6/13] PCI: dwc: Add dw_pcie_parent_bus_offset() checking and debug config: riscv-randconfig-001-20250316 (https://download.01.org/0day-ci/archive/20250316/202503160804.HTvWiBze-lkp@xxxxxxxxx/config) compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 87916f8c32ebd8e284091db9b70339df57fd1e90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250316/202503160804.HTvWiBze-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202503160804.HTvWiBze-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/pci/controller/dwc/pcie-designware.c:15: In file included from include/linux/dma/edma.h:13: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 804 | insb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb' 104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/pci/controller/dwc/pcie-designware.c:15: In file included from include/linux/dma/edma.h:13: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 812 | insw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw' 105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/pci/controller/dwc/pcie-designware.c:15: In file included from include/linux/dma/edma.h:13: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 820 | insl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl' 106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/pci/controller/dwc/pcie-designware.c:15: In file included from include/linux/dma/edma.h:13: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 829 | outsb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb' 118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/pci/controller/dwc/pcie-designware.c:15: In file included from include/linux/dma/edma.h:13: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 838 | outsw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw' 119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/pci/controller/dwc/pcie-designware.c:15: In file included from include/linux/dma/edma.h:13: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 847 | outsl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl' 120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/pci/controller/dwc/pcie-designware.c:15: In file included from include/linux/dma/edma.h:13: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 1175 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; | ~~~~~~~~~~ ^ >> drivers/pci/controller/dwc/pcie-designware.c:1135:6: warning: format specifies type 'unsigned long long' but the argument has type 'resource_size_t' (aka 'unsigned int') [-Wformat] 1134 | dev_warn(dev, "%#010llx %s reg[%d] == %#010llx; %ps is redundant\n", | ~~~~~~~~ | %#010x 1135 | cpu_phy_addr, reg_name, index, | ^~~~~~~~~~~~ include/linux/dev_printk.h:156:70: note: expanded from macro 'dev_warn' 156 | dev_printk_index_wrap(_dev_warn, KERN_WARNING, dev, dev_fmt(fmt), ##__VA_ARGS__) | ~~~ ^~~~~~~~~~~ include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap' 110 | _p_func(dev, fmt, ##__VA_ARGS__); \ | ~~~ ^~~~~~~~~~~ drivers/pci/controller/dwc/pcie-designware.c:1139:6: warning: format specifies type 'unsigned long long' but the argument has type 'resource_size_t' (aka 'unsigned int') [-Wformat] 1138 | dev_warn(dev, "%#010llx %s reg[%d] != %#010llx fixed up addr; devicetree is broken\n", | ~~~~~~~~ | %#010x 1139 | cpu_phy_addr, reg_name, | ^~~~~~~~~~~~ include/linux/dev_printk.h:156:70: note: expanded from macro 'dev_warn' 156 | dev_printk_index_wrap(_dev_warn, KERN_WARNING, dev, dev_fmt(fmt), ##__VA_ARGS__) | ~~~ ^~~~~~~~~~~ include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap' 110 | _p_func(dev, fmt, ##__VA_ARGS__); \ | ~~~ ^~~~~~~~~~~ drivers/pci/controller/dwc/pcie-designware.c:1146:6: warning: format specifies type 'unsigned long long' but the argument has type 'resource_size_t' (aka 'unsigned int') [-Wformat] 1145 | dev_warn(dev, "devicetree has incorrect translation; please check parent \"ranges\" property. CPU physical addr %#010llx, parent bus addr %#010llx\n", | ~~~~~~~~ | %#010x 1146 | cpu_phy_addr, reg_addr); | ^~~~~~~~~~~~ include/linux/dev_printk.h:156:70: note: expanded from macro 'dev_warn' 156 | dev_printk_index_wrap(_dev_warn, KERN_WARNING, dev, dev_fmt(fmt), ##__VA_ARGS__) | ~~~ ^~~~~~~~~~~ include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap' 110 | _p_func(dev, fmt, ##__VA_ARGS__); \ | ~~~ ^~~~~~~~~~~ 10 warnings generated. vim +1135 drivers/pci/controller/dwc/pcie-designware.c 1109 1110 resource_size_t dw_pcie_parent_bus_offset(struct dw_pcie *pci, 1111 const char *reg_name, 1112 resource_size_t cpu_phy_addr) 1113 { 1114 struct device *dev = pci->dev; 1115 struct device_node *np = dev->of_node; 1116 int index; 1117 u64 reg_addr, fixup_addr; 1118 u64 (*fixup)(struct dw_pcie *pcie, u64 cpu_addr); 1119 1120 /* Look up reg_name address on parent bus */ 1121 index = of_property_match_string(np, "reg-names", reg_name); 1122 1123 if (index < 0) { 1124 dev_err(dev, "No %s in devicetree \"reg\" property\n", reg_name); 1125 return 0; 1126 } 1127 1128 of_property_read_reg(np, index, ®_addr, NULL); 1129 1130 fixup = pci->ops->cpu_addr_fixup; 1131 if (fixup) { 1132 fixup_addr = fixup(pci, cpu_phy_addr); 1133 if (reg_addr == fixup_addr) { 1134 dev_warn(dev, "%#010llx %s reg[%d] == %#010llx; %ps is redundant\n", > 1135 cpu_phy_addr, reg_name, index, -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
