Re: [PATCH v2 8/8] PCI: rzg3s-host: Add 100 ms delay after link training

[kernel test robot <lkp@intel.com>]

Hi Hans,

kernel test robot noticed the following build errors:

[auto build test ERROR on a293ec25d59dd96309058c70df5a4dd0f889a1e4]

url:    https://github.com/intel-lab-lkp/linux/commits/Hans-Zhang/PCI-Add-pcie_wait_after_link_train-helper/20260514-132815
base:   a293ec25d59dd96309058c70df5a4dd0f889a1e4
patch link:    https://lore.kernel.org/r/20260506152346.166056-9-18255117159%40163.com
patch subject: [PATCH v2 8/8] PCI: rzg3s-host: Add 100 ms delay after link training
config: arm64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260514/202605141646.YYkbS6Hg-lkp@intel.com/config)
compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260514/202605141646.YYkbS6Hg-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605141646.YYkbS6Hg-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/pci/controller/pci-thunder-pem.c:16:
   drivers/pci/controller/../pci.h: In function 'pcie_wait_after_link_train':
>> drivers/pci/controller/../pci.h:73:17: error: implicit declaration of function 'msleep' [-Wimplicit-function-declaration]
      73 |                 msleep(PCIE_RESET_CONFIG_WAIT_MS);
         |                 ^~~~~~
--
   In file included from drivers/pci/controller/dwc/pcie-al.c:14:
   drivers/pci/controller/dwc/../../pci.h: In function 'pcie_wait_after_link_train':
>> drivers/pci/controller/dwc/../../pci.h:73:17: error: implicit declaration of function 'msleep' [-Wimplicit-function-declaration]
      73 |                 msleep(PCIE_RESET_CONFIG_WAIT_MS);
         |                 ^~~~~~


vim +/msleep +73 drivers/pci/controller/../pci.h

    62	
    63	/**
    64	 * pcie_wait_after_link_train - Wait 100 ms if link speed > 5 GT/s
    65	 * @max_link_speed: the maximum link speed (2 = 5.0 GT/s, 3 = 8.0 GT/s, ...)
    66	 *
    67	 * Must be called after Link training completes and before the first
    68	 * Configuration Request is sent.
    69	 */
    70	static inline void pcie_wait_after_link_train(int max_link_speed)
    71	{
    72		if (max_link_speed > 2)
  > 73			msleep(PCIE_RESET_CONFIG_WAIT_MS);
    74	}
    75	

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki