linux-kernel - Re: [PATCH v5 9/9] PCI: endpoint: Add PCI Endpoint function driver for MHI bus

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Date:   Fri, 2 Jun 2023 13:17:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        lpieralisi@...nel.org, kw@...ux.com
Cc:     oe-kbuild-all@...ts.linux.dev, kishon@...nel.org,
        bhelgaas@...gle.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: Re: [PATCH v5 9/9] PCI: endpoint: Add PCI Endpoint function driver
 for MHI bus

Hi Manivannan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on pci/next]
[also build test WARNING on pci/for-linus jonmason-ntb/ntb-next linus/master v6.4-rc4 next-20230601]
[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/Manivannan-Sadhasivam/MAINTAINERS-Add-entry-for-MHI-networking-drivers-under-MHI-bus/20230601-232444
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20230601145718.12204-10-manivannan.sadhasivam%40linaro.org
patch subject: [PATCH v5 9/9] PCI: endpoint: Add PCI Endpoint function driver for MHI bus
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20230602/202306021200.ndNlhtdv-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/b6931b37d070b86af64eeb92c1d52b4a0c6d61e8
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Manivannan-Sadhasivam/MAINTAINERS-Add-entry-for-MHI-networking-drivers-under-MHI-bus/20230601-232444
        git checkout b6931b37d070b86af64eeb92c1d52b4a0c6d61e8
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/pci/endpoint/functions/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306021200.ndNlhtdv-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/pci/endpoint/functions/pci-epf-mhi.c: In function 'pci_epf_mhi_link_down':
>> drivers/pci/endpoint/functions/pci-epf-mhi.c:307:43: warning: unused variable 'info' [-Wunused-variable]
     307 |         const struct pci_epf_mhi_ep_info *info = epf_mhi->info;
         |                                           ^~~~
   drivers/pci/endpoint/functions/pci-epf-mhi.c: In function 'pci_epf_mhi_bme':
   drivers/pci/endpoint/functions/pci-epf-mhi.c:321:43: warning: unused variable 'info' [-Wunused-variable]
     321 |         const struct pci_epf_mhi_ep_info *info = epf_mhi->info;
         |                                           ^~~~


vim +/info +307 drivers/pci/endpoint/functions/pci-epf-mhi.c

   303	
   304	static int pci_epf_mhi_link_down(struct pci_epf *epf)
   305	{
   306		struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf);
 > 307		const struct pci_epf_mhi_ep_info *info = epf_mhi->info;
   308		struct mhi_ep_cntrl *mhi_cntrl = &epf_mhi->mhi_cntrl;
   309	
   310		if (mhi_cntrl->mhi_dev) {
   311			mhi_ep_power_down(mhi_cntrl);
   312			mhi_ep_unregister_controller(mhi_cntrl);
   313		}
   314	
   315		return 0;
   316	}
   317	

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