linux-kernel - Re: [PATCH 1/2] scsi: ufs: Add Multi-Circular Queue support

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Date:   Wed, 20 Jul 2022 15:57:05 +0800
From:   kernel test robot <lkp@...el.com>
To:     Can Guo <quic_cang@...cinc.com>, bvanassche@....org,
        stanley.chu@...iatek.com, adrian.hunter@...el.com,
        alim.akhtar@...sung.com, avri.altman@....com, beanhuo@...ron.com,
        quic_asutoshd@...cinc.com, quic_nguyenb@...cinc.com,
        quic_ziqichen@...cinc.com, linux-scsi@...r.kernel.org,
        kernel-team@...roid.com
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Daejun Park <daejun7.park@...sung.com>,
        Jinyoung Choi <j-young.choi@...sung.com>,
        Kiwoong Kim <kwmad.kim@...sung.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] scsi: ufs: Add Multi-Circular Queue support

Hi Can,

I love your patch! Perhaps something to improve:

[auto build test WARNING on jejb-scsi/for-next]
[also build test WARNING on mkp-scsi/for-next next-20220719]
[cannot apply to linus/master v5.19-rc7]
[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/Can-Guo/UFS-Multi-Circular-Queue-MCQ/20220719-150436
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
config: x86_64-randconfig-r036-20220718 (https://download.01.org/0day-ci/archive/20220720/202207201538.0hGdcttT-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project dd5635541cd7bbd62cd59b6694dfb759b6e9a0d8)
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/intel-lab-lkp/linux/commit/2b7356bcd24efd2d6b69f04dd9fd010c4256cc7e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Can-Guo/UFS-Multi-Circular-Queue-MCQ/20220719-150436
        git checkout 2b7356bcd24efd2d6b69f04dd9fd010c4256cc7e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/ufs/core/

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

All warnings (new ones prefixed by >>):

>> drivers/ufs/core/ufshcd.c:5465:13: warning: no previous prototype for function 'ufshcd_transfer_req_compl' [-Wmissing-prototypes]
   irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
               ^
   drivers/ufs/core/ufshcd.c:5465:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
   ^
   static 
   1 warning generated.


vim +/ufshcd_transfer_req_compl +5465 drivers/ufs/core/ufshcd.c

  5456	
  5457	/**
  5458	 * ufshcd_transfer_req_compl - handle SCSI and query command completion
  5459	 * @hba: per adapter instance
  5460	 *
  5461	 * Returns
  5462	 *  IRQ_HANDLED - If interrupt is valid
  5463	 *  IRQ_NONE    - If invalid interrupt
  5464	 */
> 5465	irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
  5466	{
  5467		/* Resetting interrupt aggregation counters first and reading the
  5468		 * DOOR_BELL afterward allows us to handle all the completed requests.
  5469		 * In order to prevent other interrupts starvation the DB is read once
  5470		 * after reset. The down side of this solution is the possibility of
  5471		 * false interrupt if device completes another request after resetting
  5472		 * aggregation and before reading the DB.
  5473		 */
  5474		if (ufshcd_is_intr_aggr_allowed(hba) &&
  5475		    !(hba->quirks & UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR))
  5476			ufshcd_reset_intr_aggr(hba);
  5477	
  5478		if (ufs_fail_completion())
  5479			return IRQ_HANDLED;
  5480	
  5481		/*
  5482		 * Ignore the ufshcd_poll() return value and return IRQ_HANDLED since we
  5483		 * do not want polling to trigger spurious interrupt complaints.
  5484		 */
  5485		ufshcd_poll(hba->host, 0);
  5486	
  5487		return IRQ_HANDLED;
  5488	}
  5489	EXPORT_SYMBOL_GPL(ufshcd_transfer_req_compl);
  5490	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp