CC: [email protected] CC: [email protected] TO: Christophe Leroy <[email protected]> CC: Michael Ellerman <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bdb575f872175ed0ecf2638369da1cb7a6e86a14 commit: 894fa235eb4ca0bfa692dbe4932c2f940cdc8c1e powerpc: inline iomap accessors date: 10 months ago :::::: branch date: 9 hours ago :::::: commit date: 10 months ago config: powerpc64-randconfig-m031-20210916 (attached as .config) compiler: powerpc-linux-gcc (GCC) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> smatch warnings: drivers/pci/pci.c:4050 pci_remap_iospace() warn: impossible condition '(res->end > ~(0)) => (0-u32max > u32max)' vim +4050 drivers/pci/pci.c c5076cfe768998 Tomasz Nowicki 2016-05-11 4031 8b921acfeffdb0 Liviu Dudau 2014-09-29 4032 /** 8b921acfeffdb0 Liviu Dudau 2014-09-29 4033 * pci_remap_iospace - Remap the memory mapped I/O space 8b921acfeffdb0 Liviu Dudau 2014-09-29 4034 * @res: Resource describing the I/O space 8b921acfeffdb0 Liviu Dudau 2014-09-29 4035 * @phys_addr: physical address of range to be mapped 8b921acfeffdb0 Liviu Dudau 2014-09-29 4036 * 74356addc0b32e Bjorn Helgaas 2019-01-09 4037 * Remap the memory mapped I/O space described by the @res and the CPU 74356addc0b32e Bjorn Helgaas 2019-01-09 4038 * physical address @phys_addr into virtual address space. Only 74356addc0b32e Bjorn Helgaas 2019-01-09 4039 * architectures that have memory mapped IO functions defined (and the 74356addc0b32e Bjorn Helgaas 2019-01-09 4040 * PCI_IOBASE value defined) should call this function. 8b921acfeffdb0 Liviu Dudau 2014-09-29 4041 */ 7b309aef046334 Lorenzo Pieralisi 2017-04-19 4042 int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr) 8b921acfeffdb0 Liviu Dudau 2014-09-29 4043 { 8b921acfeffdb0 Liviu Dudau 2014-09-29 4044 #if defined(PCI_IOBASE) && defined(CONFIG_MMU) 8b921acfeffdb0 Liviu Dudau 2014-09-29 4045 unsigned long vaddr = (unsigned long)PCI_IOBASE + res->start; 8b921acfeffdb0 Liviu Dudau 2014-09-29 4046 8b921acfeffdb0 Liviu Dudau 2014-09-29 4047 if (!(res->flags & IORESOURCE_IO)) 8b921acfeffdb0 Liviu Dudau 2014-09-29 4048 return -EINVAL; 8b921acfeffdb0 Liviu Dudau 2014-09-29 4049 8b921acfeffdb0 Liviu Dudau 2014-09-29 @4050 if (res->end > IO_SPACE_LIMIT) 8b921acfeffdb0 Liviu Dudau 2014-09-29 4051 return -EINVAL; 8b921acfeffdb0 Liviu Dudau 2014-09-29 4052 8b921acfeffdb0 Liviu Dudau 2014-09-29 4053 return ioremap_page_range(vaddr, vaddr + resource_size(res), phys_addr, 8b921acfeffdb0 Liviu Dudau 2014-09-29 4054 pgprot_device(PAGE_KERNEL)); 8b921acfeffdb0 Liviu Dudau 2014-09-29 4055 #else 74356addc0b32e Bjorn Helgaas 2019-01-09 4056 /* 74356addc0b32e Bjorn Helgaas 2019-01-09 4057 * This architecture does not have memory mapped I/O space, 74356addc0b32e Bjorn Helgaas 2019-01-09 4058 * so this function should never be called 74356addc0b32e Bjorn Helgaas 2019-01-09 4059 */ 8b921acfeffdb0 Liviu Dudau 2014-09-29 4060 WARN_ONCE(1, "This architecture does not support memory mapped I/O\n"); 8b921acfeffdb0 Liviu Dudau 2014-09-29 4061 return -ENODEV; 8b921acfeffdb0 Liviu Dudau 2014-09-29 4062 #endif 8b921acfeffdb0 Liviu Dudau 2014-09-29 4063 } f90b0875463e45 Brian Norris 2017-03-09 4064 EXPORT_SYMBOL(pci_remap_iospace); 8b921acfeffdb0 Liviu Dudau 2014-09-29 4065 :::::: The code at line 4050 was first introduced by commit :::::: 8b921acfeffdb0b45085da862fc301a2d25ed2cf PCI: Add pci_remap_iospace() to map bus I/O resources :::::: TO: Liviu Dudau <[email protected]> :::::: CC: Bjorn Helgaas <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
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