linux-kernel - Re: [PATCH v5 1/4] PCI: endpoint: Add D-state change notifier support

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Date:   Wed, 2 Aug 2023 13:14:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     Krishna chaitanya chundru <quic_krichai@...cinc.com>,
        manivannan.sadhasivam@...aro.org
Cc:     oe-kbuild-all@...ts.linux.dev, helgaas@...nel.org,
        linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_vbadigan@...cinc.com,
        quic_nitegupt@...cinc.com, quic_skananth@...cinc.com,
        quic_ramkri@...cinc.com, quic_parass@...cinc.com,
        krzysztof.kozlowski@...aro.org,
        Krishna chaitanya chundru <quic_krichai@...cinc.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org
Subject: Re: [PATCH v5 1/4] PCI: endpoint: Add D-state change notifier support

Hi Krishna,

kernel test robot noticed the following build warnings:

[auto build test WARNING on pci/next]
[also build test WARNING on pci/for-linus linus/master v6.5-rc4 next-20230801]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Krishna-chaitanya-chundru/PCI-endpoint-Add-D-state-change-notifier-support/20230802-115309
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/1690948281-2143-2-git-send-email-quic_krichai%40quicinc.com
patch subject: [PATCH v5 1/4] PCI: endpoint: Add D-state change notifier support
config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20230802/202308021312.obgu7FWM-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230802/202308021312.obgu7FWM-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308021312.obgu7FWM-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/pci/endpoint/pci-epc-core.c:795:6: warning: no previous prototype for 'pci_epc_dstate_notity' [-Wmissing-prototypes]
     795 | void pci_epc_dstate_notity(struct pci_epc *epc, pci_power_t state)
         |      ^~~~~~~~~~~~~~~~~~~~~


vim +/pci_epc_dstate_notity +795 drivers/pci/endpoint/pci-epc-core.c

   785	
   786	/**
   787	 * pci_epc_dstate_notity() - Notify the EPF driver that EPC device D-state
   788	 *			has changed
   789	 * @epc: the EPC device which has change in D-state
   790	 * @state: the changed D-state
   791	 *
   792	 * Invoke to Notify the EPF device that the EPC device has D-state has
   793	 * changed.
   794	 */
 > 795	void pci_epc_dstate_notity(struct pci_epc *epc, pci_power_t state)
   796	{
   797		struct pci_epf *epf;
   798	
   799		if (!epc || IS_ERR(epc))
   800			return;
   801	
   802		mutex_lock(&epc->list_lock);
   803		list_for_each_entry(epf, &epc->pci_epf, list) {
   804			mutex_lock(&epf->lock);
   805			if (epf->event_ops && epf->event_ops->dstate_notify)
   806				epf->event_ops->dstate_notify(epf, state);
   807			mutex_unlock(&epf->lock);
   808		}
   809		mutex_unlock(&epc->list_lock);
   810	}
   811	EXPORT_SYMBOL_GPL(pci_epc_dstate_notity);
   812	

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