From: kernel test robot <lkp@intel.com>
To: Stafford Horne <shorne@gmail.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org
Subject: drivers/pci/pci.c:4195 pci_pio_to_address() warn: always true condition '(pio >= (0 - 0)) => (0-u32max >= 0)'
Date: Wed, 21 Sep 2022 16:09:42 +0800 [thread overview]
Message-ID: <202209211647.5COmF7fM-lkp@intel.com> (raw)
Hi Stafford,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 60891ec99e141b74544d11e897a245ef06263052
commit: ded2ee36313c941f1a12b6f85cde295b575264ae openrisc: Add pci bus support
date: 8 weeks ago
config: openrisc-randconfig-m041-20220919 (https://download.01.org/0day-ci/archive/20220921/202209211647.5COmF7fM-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 12.1.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
smatch warnings:
drivers/pci/pci.c:4195 pci_pio_to_address() warn: always true condition '(pio >= (0 - 0)) => (0-u32max >= 0)'
drivers/media/pci/cx23885/cx23885-dvb.c:2579 dvb_register() error: we previously assumed 'fe1->dvb.frontend' could be null (see line 1743)
vim +4195 drivers/pci/pci.c
c5076cfe768998 Tomasz Nowicki 2016-05-11 4189
c5076cfe768998 Tomasz Nowicki 2016-05-11 4190 phys_addr_t pci_pio_to_address(unsigned long pio)
c5076cfe768998 Tomasz Nowicki 2016-05-11 4191 {
c5076cfe768998 Tomasz Nowicki 2016-05-11 4192 phys_addr_t address = (phys_addr_t)OF_BAD_ADDR;
c5076cfe768998 Tomasz Nowicki 2016-05-11 4193
c5076cfe768998 Tomasz Nowicki 2016-05-11 4194 #ifdef PCI_IOBASE
5745392e0c2b78 Zhichang Yuan 2018-03-15 @4195 if (pio >= MMIO_UPPER_LIMIT)
c5076cfe768998 Tomasz Nowicki 2016-05-11 4196 return address;
c5076cfe768998 Tomasz Nowicki 2016-05-11 4197
5745392e0c2b78 Zhichang Yuan 2018-03-15 4198 address = logic_pio_to_hwaddr(pio);
c5076cfe768998 Tomasz Nowicki 2016-05-11 4199 #endif
c5076cfe768998 Tomasz Nowicki 2016-05-11 4200
c5076cfe768998 Tomasz Nowicki 2016-05-11 4201 return address;
c5076cfe768998 Tomasz Nowicki 2016-05-11 4202 }
9cc742078c9a90 Jianjun Wang 2021-04-20 4203 EXPORT_SYMBOL_GPL(pci_pio_to_address);
c5076cfe768998 Tomasz Nowicki 2016-05-11 4204
:::::: The code at line 4195 was first introduced by commit
:::::: 5745392e0c2b78e0d73203281d5c42cbd6993194 PCI: Apply the new generic I/O management on PCI IO hosts
:::::: TO: Zhichang Yuan <yuanzhichang@hisilicon.com>
:::::: CC: Bjorn Helgaas <helgaas@kernel.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
next reply other threads:[~2022-09-21 8:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-21 8:09 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-09-22 10:44 drivers/pci/pci.c:4195 pci_pio_to_address() warn: always true condition '(pio >= (0 - 0)) => (0-u32max >= 0)' kernel test robot
2023-01-11 15:40 kernel test robot
2023-05-14 4:28 kernel test robot
2023-06-28 13:23 kernel test robot
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