[chrome-os:chromeos-5.15 25/64] drivers/media/test-drivers/visl/visl-video.c:380:34: warning: taking address of packed member 'width' of class or structure 'v4l2_pix_format_mplane' may result in an unaligned pointer value

[chrome-os:chromeos-5.15 25/64] drivers/media/test-drivers/visl/visl-video.c:380:34: warning: taking address of packed member 'width' of class or structure 'v4l2_pix_format_mplane' may result in an unaligned pointer value

[kernel test robot]

TO: cros-kernel-buildreports@googlegroups.com
TO: Guenter Roeck <groeck@google.com>

tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.15
head:   c7060e95007c2b896f4729104c381e0f0727c228
commit: e2fbae08263ef80e2972124ca04cdef1e51d3ac1 [25/64] BACKPORT: media: visl: add virtual stateless decoder driver
config: mips-randconfig-r014-20230326 (https://download.01.org/0day-ci/archive/20230328/202303281617.np7VyX09-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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 mips cross compiling tool for clang build
        # apt-get install binutils-mips64el-linux-gnuabi64
        git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel
        git fetch --no-tags chrome-os chromeos-5.15
        git checkout e2fbae08263ef80e2972124ca04cdef1e51d3ac1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/media/test-drivers/visl/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303281617.np7VyX09-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/media/test-drivers/visl/visl-video.c:380:34: warning: taking address of packed member 'width' of class or structure 'v4l2_pix_format_mplane' may result in an unaligned pointer value [-Waddress-of-packed-member]
           v4l2_apply_frmsize_constraints(&pix_mp->width,
                                           ^~~~~~~~~~~~~
>> drivers/media/test-drivers/visl/visl-video.c:381:13: warning: taking address of packed member 'height' of class or structure 'v4l2_pix_format_mplane' may result in an unaligned pointer value [-Waddress-of-packed-member]
                                          &pix_mp->height,
                                           ^~~~~~~~~~~~~~
   drivers/media/test-drivers/visl/visl-video.c:404:34: warning: taking address of packed member 'width' of class or structure 'v4l2_pix_format_mplane' may result in an unaligned pointer value [-Waddress-of-packed-member]
           v4l2_apply_frmsize_constraints(&pix_mp->width,
                                           ^~~~~~~~~~~~~
   drivers/media/test-drivers/visl/visl-video.c:405:13: warning: taking address of packed member 'height' of class or structure 'v4l2_pix_format_mplane' may result in an unaligned pointer value [-Waddress-of-packed-member]
                                          &pix_mp->height,
                                           ^~~~~~~~~~~~~~
   4 warnings generated.


vim +380 drivers/media/test-drivers/visl/visl-video.c

   361	
   362	static int visl_try_fmt_vid_cap(struct file *file, void *priv,
   363					struct v4l2_format *f)
   364	{
   365		struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
   366		struct visl_ctx *ctx = visl_file_to_ctx(file);
   367		const struct visl_coded_format_desc *coded_desc;
   368		unsigned int i;
   369	
   370		coded_desc = ctx->coded_format_desc;
   371	
   372		for (i = 0; i < coded_desc->num_decoded_fmts; i++) {
   373			if (coded_desc->decoded_fmts[i] == pix_mp->pixelformat)
   374				break;
   375		}
   376	
   377		if (i == coded_desc->num_decoded_fmts)
   378			pix_mp->pixelformat = coded_desc->decoded_fmts[0];
   379	
 > 380		v4l2_apply_frmsize_constraints(&pix_mp->width,
 > 381					       &pix_mp->height,
   382					       &coded_desc->frmsize);
   383	
   384		v4l2_fill_pixfmt_mp(pix_mp, pix_mp->pixelformat,
   385				    pix_mp->width, pix_mp->height);
   386	
   387		pix_mp->field = V4L2_FIELD_NONE;
   388	
   389		return 0;
   390	}
   391	

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