Re: [PATCH v6 06/10] drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backends

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

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Hi Thomas,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20201028]
[cannot apply to drm-exynos/exynos-drm-next rockchip/for-next linus/master anholt/for-next v5.10-rc1 v5.9 v5.9-rc8 v5.10-rc1]
[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]

url:    https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/Support-GEM-object-mappings-from-I-O-memory/20201029-033704
base:    1c86f90a16d413621918ae1403842b43632f0b3d
config: arm-defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/649bc838b7c4e7b01ccad3decaa3e13f31659c6b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Thomas-Zimmermann/Support-GEM-object-mappings-from-I-O-memory/20201029-033704
        git checkout 649bc838b7c4e7b01ccad3decaa3e13f31659c6b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

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

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/msm/msm_gem.c:1014:10: error: initialization of 'int (*)(struct drm_gem_object *, struct dma_buf_map *)' from incompatible pointer type 'void * (*)(struct drm_gem_object *)' [-Werror=incompatible-pointer-types]
    1014 |  .vmap = msm_gem_prime_vmap,
         |          ^~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/msm/msm_gem.c:1014:10: note: (near initialization for 'msm_gem_object_funcs.vmap')
>> drivers/gpu/drm/msm/msm_gem.c:1015:12: error: initialization of 'void (*)(struct drm_gem_object *, struct dma_buf_map *)' from incompatible pointer type 'void (*)(struct drm_gem_object *, void *)' [-Werror=incompatible-pointer-types]
    1015 |  .vunmap = msm_gem_prime_vunmap,
         |            ^~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/msm/msm_gem.c:1015:12: note: (near initialization for 'msm_gem_object_funcs.vunmap')
   cc1: some warnings being treated as errors

vim +1014 drivers/gpu/drm/msm/msm_gem.c

3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1008  
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1009  static const struct drm_gem_object_funcs msm_gem_object_funcs = {
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1010  	.free = msm_gem_free_object,
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1011  	.pin = msm_gem_prime_pin,
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1012  	.unpin = msm_gem_prime_unpin,
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1013  	.get_sg_table = msm_gem_prime_get_sg_table,
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23 @1014  	.vmap = msm_gem_prime_vmap,
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23 @1015  	.vunmap = msm_gem_prime_vunmap,
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1016  	.vm_ops = &vm_ops,
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1017  };
3c9edd9c85f53e0 Thomas Zimmermann 2020-09-23  1018  

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

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