linux-kernel - Re: [PATCH] PCI / thunderbolt: Add quirk to handle incorrect Supported Link Speeds

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Date:   Sat, 8 Jan 2022 19:13:59 +0800
From:   kernel test robot <lkp@...el.com>
To:     Sanrio Alvares <sanrio.alvares@...el.com>, bhelgaas@...gle.com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        mika.westerberg@...ux.intel.com,
        Sanrio Alvares <sanrio.alvares@...el.com>
Subject: Re: [PATCH] PCI / thunderbolt: Add quirk to handle incorrect
 Supported Link Speeds

Hi Sanrio,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on helgaas-pci/next]
[also build test WARNING on v5.16-rc8 next-20220107]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Sanrio-Alvares/PCI-thunderbolt-Add-quirk-to-handle-incorrect-Supported-Link-Speeds/20220107-064444
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: i386-randconfig-r024-20220107 (https://download.01.org/0day-ci/archive/20220108/202201081937.sL6eGkBc-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 32167bfe64a4c5dd4eb3f7a58e24f4cba76f5ac2)
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://github.com/0day-ci/linux/commit/98f8f42acd1b8f46f3e6778fa58dd0d1cd005369
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Sanrio-Alvares/PCI-thunderbolt-Add-quirk-to-handle-incorrect-Supported-Link-Speeds/20220107-064444
        git checkout 98f8f42acd1b8f46f3e6778fa58dd0d1cd005369
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/pci/

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

All warnings (new ones prefixed by >>):

>> drivers/pci/quirks.c:5304:6: warning: no previous prototype for function 'quirk_intel_tbt_supported_link_speeds' [-Wmissing-prototypes]
   void quirk_intel_tbt_supported_link_speeds(struct pci_dev *pdev)
        ^
   drivers/pci/quirks.c:5304:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void quirk_intel_tbt_supported_link_speeds(struct pci_dev *pdev)
   ^
   static 
   1 warning generated.


vim +/quirk_intel_tbt_supported_link_speeds +5304 drivers/pci/quirks.c

  5298	
  5299	/*
  5300	 * Intel Titan Ridge returns incorrect Supported Link Speeds Vector
  5301	 * when max Link Speed is 2.5GT/s. This results in an extra 1s delay during
  5302	 * resume_noirq with pcie tunneling enabled. Override that value:
  5303	 */
> 5304	void quirk_intel_tbt_supported_link_speeds(struct pci_dev *pdev)
  5305	{
  5306		pci_info(pdev, "applying Supported Link Speeds quirk\n");
  5307		pdev->supported_link_speed = PCIE_SPEED_2_5GT;
  5308	}
  5309	DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x15e7, quirk_intel_tbt_supported_link_speeds);
  5310	DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x15ea, quirk_intel_tbt_supported_link_speeds);
  5311	DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x15ef, quirk_intel_tbt_supported_link_speeds);
  5312	

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