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From: kernel test robot <lkp@intel.com>
To: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Nathan Chancellor <nathan@kernel.org>,
	Kees Cook <keescook@chromium.org>
Subject: [gustavoars:for-next/kspp 4/6] drivers/video/fbdev/omap/omapfb_main.c:1558:2: warning: unannotated fall-through between switch labels
Date: Thu, 14 Oct 2021 10:21:21 +0800	[thread overview]
Message-ID: <202110141005.hUjaYMEi-lkp@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/kspp
head:   312cee4f1ab71ad56dde7c45fc3943341e712536
commit: 9bed5200e04d2a3dcd3a420d249e947eac7ec7c1 [4/6] Makefile: Enable -Wimplicit-fallthrough for Clang
config: arm-randconfig-r023-20211013 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6c76d0101193aa4eb891a6954ff047eda2f9cf71)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=9bed5200e04d2a3dcd3a420d249e947eac7ec7c1
        git remote add gustavoars https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
        git fetch --no-tags gustavoars for-next/kspp
        git checkout 9bed5200e04d2a3dcd3a420d249e947eac7ec7c1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm 

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

All warnings (new ones prefixed by >>):

>> drivers/video/fbdev/omap/omapfb_main.c:1558:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
           case 0:
           ^
   drivers/video/fbdev/omap/omapfb_main.c:1558:2: note: insert 'break;' to avoid fall-through
           case 0:
           ^
           break; 
   1 warning generated.


vim +1558 drivers/video/fbdev/omap/omapfb_main.c

8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1521  
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1522  /*
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1523   * Free driver resources. Can be called to rollback an aborted initialization
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1524   * sequence.
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1525   */
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1526  static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1527  {
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1528  	int i;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1529  
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1530  	switch (state) {
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1531  	case OMAPFB_ACTIVE:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1532  		for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1533  			unregister_framebuffer(fbdev->fb_info[i]);
df561f6688fef7 drivers/video/fbdev/omap/omapfb_main.c Gustavo A. R. Silva 2020-08-23  1534  		fallthrough;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1535  	case 7:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1536  		omapfb_unregister_sysfs(fbdev);
df561f6688fef7 drivers/video/fbdev/omap/omapfb_main.c Gustavo A. R. Silva 2020-08-23  1537  		fallthrough;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1538  	case 6:
561eb9d09a93d7 drivers/video/fbdev/omap/omapfb_main.c Lars-Peter Clausen  2017-01-30  1539  		if (fbdev->panel->disable)
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1540  			fbdev->panel->disable(fbdev->panel);
df561f6688fef7 drivers/video/fbdev/omap/omapfb_main.c Gustavo A. R. Silva 2020-08-23  1541  		fallthrough;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1542  	case 5:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1543  		omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
df561f6688fef7 drivers/video/fbdev/omap/omapfb_main.c Gustavo A. R. Silva 2020-08-23  1544  		fallthrough;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1545  	case 4:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1546  		planes_cleanup(fbdev);
df561f6688fef7 drivers/video/fbdev/omap/omapfb_main.c Gustavo A. R. Silva 2020-08-23  1547  		fallthrough;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1548  	case 3:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1549  		ctrl_cleanup(fbdev);
df561f6688fef7 drivers/video/fbdev/omap/omapfb_main.c Gustavo A. R. Silva 2020-08-23  1550  		fallthrough;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1551  	case 2:
561eb9d09a93d7 drivers/video/fbdev/omap/omapfb_main.c Lars-Peter Clausen  2017-01-30  1552  		if (fbdev->panel->cleanup)
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1553  			fbdev->panel->cleanup(fbdev->panel);
df561f6688fef7 drivers/video/fbdev/omap/omapfb_main.c Gustavo A. R. Silva 2020-08-23  1554  		fallthrough;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1555  	case 1:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1556  		dev_set_drvdata(fbdev->dev, NULL);
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1557  		kfree(fbdev);
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17 @1558  	case 0:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1559  		/* nothing to free */
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1560  		break;
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1561  	default:
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1562  		BUG();
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1563  	}
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1564  }
8b08cf2b64f5a6 drivers/video/omap/omapfb_main.c       Imre Deak           2007-07-17  1565  

:::::: The code at line 1558 was first introduced by commit
:::::: 8b08cf2b64f5a60594b07795b2ad518c6d044566 OMAP: add TI OMAP framebuffer driver

:::::: TO: Imre Deak <imre.deak@solidboot.com>
:::::: CC: Linus Torvalds <torvalds@woody.linux-foundation.org>

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

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                 reply	other threads:[~2021-10-14  2:21 UTC|newest]

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