linux-kernel - [ammarfaizi2-block:kvalo/ath/pending 9/45] drivers/net/wireless/realtek/rtw89/ser.c:319:2: warning: unannotated fall-through between switch labels

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Message-ID: <202204071343.R89skHKl-lkp@intel.com>
Date:   Thu, 7 Apr 2022 13:29:53 +0800
From:   kernel test robot <lkp@...el.com>
To:     Zong-Zhe Yang <kevin_yang@...ltek.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Kalle Valo <kvalo@...nel.org>,
        Ping-Ke Shih <pkshih@...ltek.com>
Subject: [ammarfaizi2-block:kvalo/ath/pending 9/45]
 drivers/net/wireless/realtek/rtw89/ser.c:319:2: warning: unannotated
 fall-through between switch labels

tree:   https://github.com/ammarfaizi2/linux-block kvalo/ath/pending
head:   e1bd1e32fab0c91cf7a87e96fee9270e98e79351
commit: 14f9f4790048f684c2b151c899895feae0b5731a [9/45] rtw89: ser: control hci interrupts on/off by state
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220407/202204071343.R89skHKl-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6b306233f78876a1d197ed6e1f05785505de7c63)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/ammarfaizi2/linux-block/commit/14f9f4790048f684c2b151c899895feae0b5731a
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block kvalo/ath/pending
        git checkout 14f9f4790048f684c2b151c899895feae0b5731a
        # 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=arm64 SHELL=/bin/bash drivers/net/wireless/realtek/rtw89/

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/net/wireless/realtek/rtw89/ser.c:319:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
           default:
           ^
   drivers/net/wireless/realtek/rtw89/ser.c:319:2: note: insert 'break;' to avoid fall-through
           default:
           ^
           break; 
   1 warning generated.


vim +319 drivers/net/wireless/realtek/rtw89/ser.c

e3ec7017f6a20d Ping-Ke Shih  2021-10-11  301  
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  302  /* state handler */
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  303  static void ser_idle_st_hdl(struct rtw89_ser *ser, u8 evt)
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  304  {
14f9f4790048f6 Zong-Zhe Yang 2022-03-14  305  	struct rtw89_dev *rtwdev = container_of(ser, struct rtw89_dev, ser);
14f9f4790048f6 Zong-Zhe Yang 2022-03-14  306  
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  307  	switch (evt) {
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  308  	case SER_EV_STATE_IN:
14f9f4790048f6 Zong-Zhe Yang 2022-03-14  309  		rtw89_hci_recovery_complete(rtwdev);
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  310  		break;
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  311  	case SER_EV_L1_RESET:
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  312  		ser_state_goto(ser, SER_RESET_TRX_ST);
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  313  		break;
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  314  	case SER_EV_L2_RESET:
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  315  		ser_state_goto(ser, SER_L2_RESET_ST);
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  316  		break;
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  317  	case SER_EV_STATE_OUT:
14f9f4790048f6 Zong-Zhe Yang 2022-03-14  318  		rtw89_hci_recovery_start(rtwdev);
e3ec7017f6a20d Ping-Ke Shih  2021-10-11 @319  	default:
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  320  		break;
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  321  	}
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  322  }
e3ec7017f6a20d Ping-Ke Shih  2021-10-11  323  

:::::: The code at line 319 was first introduced by commit
:::::: e3ec7017f6a20d12ddd9fe23d345ebb7b8c104dd rtw89: add Realtek 802.11ax driver

:::::: TO: Ping-Ke Shih <pkshih@...ltek.com>
:::::: CC: Kalle Valo <kvalo@...eaurora.org>

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