[helgaas-pci:pci/driver 17/24] drivers/misc/cxl/pci.c:1816:29: error: assignment discards 'const' qualifier from pointer target type

* [helgaas-pci:pci/driver 17/24] drivers/misc/cxl/pci.c:1816:29: error: assignment discards 'const' qualifier from pointer target type
@ 2021-11-12  1:33 kernel test robot
  2021-11-12  1:42 ` Krzysztof Wilczyński
  0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2021-11-12  1:33 UTC (permalink / raw)
  To: Bjorn Helgaas; +Cc: kbuild-all, linux-pci

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git pci/driver
head:   0508b6f72f055b88df518db4f3811bda9bb35da4
commit: 115c9d41e58388415f4956d0a988c90fb48663b9 [17/24] cxl: Factor out common dev->driver expressions
config: powerpc64-allnoconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?id=115c9d41e58388415f4956d0a988c90fb48663b9
        git remote add helgaas-pci https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git
        git fetch --no-tags helgaas-pci pci/driver
        git checkout 115c9d41e58388415f4956d0a988c90fb48663b9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/misc/cxl/pci.c: In function 'cxl_vphb_error_detected':
>> drivers/misc/cxl/pci.c:1816:29: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
    1816 |                 err_handler = afu_drv->err_handler;
         |                             ^
   drivers/misc/cxl/pci.c: In function 'cxl_pci_slot_reset':
   drivers/misc/cxl/pci.c:2041:37: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
    2041 |                         err_handler = afu_drv->err_handler;
         |                                     ^
   drivers/misc/cxl/pci.c: In function 'cxl_pci_resume':
   drivers/misc/cxl/pci.c:2090:37: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
    2090 |                         err_handler = afu_drv->err_handler;
         |                                     ^
   cc1: all warnings being treated as errors
--
   drivers/misc/cxl/guest.c: In function 'pci_error_handlers':
>> drivers/misc/cxl/guest.c:34:29: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
      34 |                 err_handler = afu_drv->err_handler;
         |                             ^
   cc1: all warnings being treated as errors

vim +/const +1816 drivers/misc/cxl/pci.c

  1793	
  1794	static pci_ers_result_t cxl_vphb_error_detected(struct cxl_afu *afu,
  1795							pci_channel_state_t state)
  1796	{
  1797		struct pci_dev *afu_dev;
  1798		struct pci_driver *afu_drv;
  1799		struct pci_error_handlers *err_handler;
  1800		pci_ers_result_t result = PCI_ERS_RESULT_NEED_RESET;
  1801		pci_ers_result_t afu_result = PCI_ERS_RESULT_NEED_RESET;
  1802	
  1803		/* There should only be one entry, but go through the list
  1804		 * anyway
  1805		 */
  1806		if (afu == NULL || afu->phb == NULL)
  1807			return result;
  1808	
  1809		list_for_each_entry(afu_dev, &afu->phb->bus->devices, bus_list) {
  1810			afu_drv = afu_dev->driver;
  1811			if (!afu_drv)
  1812				continue;
  1813	
  1814			afu_dev->error_state = state;
  1815	
> 1816			err_handler = afu_drv->err_handler;
  1817			if (err_handler)
  1818				afu_result = err_handler->error_detected(afu_dev,
  1819									 state);
  1820			/* Disconnect trumps all, NONE trumps NEED_RESET */
  1821			if (afu_result == PCI_ERS_RESULT_DISCONNECT)
  1822				result = PCI_ERS_RESULT_DISCONNECT;
  1823			else if ((afu_result == PCI_ERS_RESULT_NONE) &&
  1824				 (result == PCI_ERS_RESULT_NEED_RESET))
  1825				result = PCI_ERS_RESULT_NONE;
  1826		}
  1827		return result;
  1828	}
  1829	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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