Re: [PATCH 15/15] dma-buf: Remove kernel map/unmap hooks

[kbuild test robot <lkp@intel.com>]

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Hi Daniel,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on v5.4-rc8 next-20191115]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Daniel-Vetter/Retire-dma_buf_k-un-map/20191118-184537
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=m68k 

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

All errors (new ones prefixed by >>):

>> drivers/dma-buf/udmabuf.c:114:3: error: 'const struct dma_buf_ops' has no member named 'map'; did you mean 'mmap'?
     .map    = kmap_udmabuf,
      ^~~
      mmap
>> drivers/dma-buf/udmabuf.c:114:12: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .map    = kmap_udmabuf,
               ^~~~~~~~~~~~
   drivers/dma-buf/udmabuf.c:114:12: note: (near initialization for 'udmabuf_ops.begin_cpu_access')
>> drivers/dma-buf/udmabuf.c:115:3: error: 'const struct dma_buf_ops' has no member named 'unmap'; did you mean 'vunmap'?
     .unmap    = kunmap_udmabuf,
      ^~~~~
      vunmap
   drivers/dma-buf/udmabuf.c:115:14: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .unmap    = kunmap_udmabuf,
                 ^~~~~~~~~~~~~~
   drivers/dma-buf/udmabuf.c:115:14: note: (near initialization for 'udmabuf_ops.end_cpu_access')
   cc1: some warnings being treated as errors
--
>> drivers/gpu/drm/udl/udl_dmabuf.c:169:3: error: 'const struct dma_buf_ops' has no member named 'map'; did you mean 'mmap'?
     .map   = udl_dmabuf_kmap,
      ^~~
      mmap
>> drivers/gpu/drm/udl/udl_dmabuf.c:169:11: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .map   = udl_dmabuf_kmap,
              ^~~~~~~~~~~~~~~
   drivers/gpu/drm/udl/udl_dmabuf.c:169:11: note: (near initialization for 'udl_dmabuf_ops.release')
>> drivers/gpu/drm/udl/udl_dmabuf.c:170:3: error: 'const struct dma_buf_ops' has no member named 'unmap'; did you mean 'vunmap'?
     .unmap   = udl_dmabuf_kunmap,
      ^~~~~
      vunmap
   drivers/gpu/drm/udl/udl_dmabuf.c:170:13: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .unmap   = udl_dmabuf_kunmap,
                ^~~~~~~~~~~~~~~~~
   drivers/gpu/drm/udl/udl_dmabuf.c:170:13: note: (near initialization for 'udl_dmabuf_ops.begin_cpu_access')
   cc1: some warnings being treated as errors

vim +114 drivers/dma-buf/udmabuf.c

fbb0de79507819 Gerd Hoffmann 2018-08-27  109  
a34852891ba45d Gerd Hoffmann 2018-09-11  110  static const struct dma_buf_ops udmabuf_ops = {
fbb0de79507819 Gerd Hoffmann 2018-08-27  111  	.map_dma_buf	  = map_udmabuf,
fbb0de79507819 Gerd Hoffmann 2018-08-27  112  	.unmap_dma_buf	  = unmap_udmabuf,
fbb0de79507819 Gerd Hoffmann 2018-08-27  113  	.release	  = release_udmabuf,
fbb0de79507819 Gerd Hoffmann 2018-08-27 @114  	.map		  = kmap_udmabuf,
fbb0de79507819 Gerd Hoffmann 2018-08-27 @115  	.unmap		  = kunmap_udmabuf,
fbb0de79507819 Gerd Hoffmann 2018-08-27  116  	.mmap		  = mmap_udmabuf,
fbb0de79507819 Gerd Hoffmann 2018-08-27  117  };
fbb0de79507819 Gerd Hoffmann 2018-08-27  118  

:::::: The code at line 114 was first introduced by commit
:::::: fbb0de795078190a9834b3409e4b009cfb18a6d4 Add udmabuf misc device

:::::: TO: Gerd Hoffmann <kraxel@redhat.com>
:::::: CC: Gerd Hoffmann <kraxel@redhat.com>

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation

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