[PATCH] staging: android: ion: fix ion_dma_buf_attach signatur

[kbuild test robot]

Hi Christian,

I love your patch! Yet something to improve:

[auto build test ERROR on staging/staging-testing]
[also build test ERROR on v4.18-rc1 next-20180620]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Christian-K-nig/staging-android-ion-fix-ion_dma_buf_attach-signatur/20180621-044136
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 8.1.0
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=8.1.0 make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

>> drivers/staging/android/ion/ion.c:374:12: error: initialization of 'int (*)(struct dma_buf *, struct device *, struct dma_buf_attachment *)' from incompatible pointer type 'int (*)(struct dma_buf *, struct dma_buf_attachment *)' [-Werror=incompatible-pointer-types]
     .attach = ion_dma_buf_attach,
               ^~~~~~~~~~~~~~~~~~
   drivers/staging/android/ion/ion.c:374:12: note: (near initialization for 'dma_buf_ops.attach')
   cc1: some warnings being treated as errors

vim +374 drivers/staging/android/ion/ion.c

b892bf75 Rebecca Schultz Zavin 2013-12-13  368  
2328ed66 Bhumika Goyal         2016-10-15  369  static const struct dma_buf_ops dma_buf_ops = {
b892bf75 Rebecca Schultz Zavin 2013-12-13  370  	.map_dma_buf = ion_map_dma_buf,
b892bf75 Rebecca Schultz Zavin 2013-12-13  371  	.unmap_dma_buf = ion_unmap_dma_buf,
b892bf75 Rebecca Schultz Zavin 2013-12-13  372  	.mmap = ion_mmap,
b892bf75 Rebecca Schultz Zavin 2013-12-13  373  	.release = ion_dma_buf_release,
2a55e7b5 Laura Abbott          2017-04-03 @374  	.attach = ion_dma_buf_attach,
2a55e7b5 Laura Abbott          2017-04-03  375  	.detach = ion_dma_buf_detatch,
0f34faf8 Rebecca Schultz Zavin 2013-12-13  376  	.begin_cpu_access = ion_dma_buf_begin_cpu_access,
0f34faf8 Rebecca Schultz Zavin 2013-12-13  377  	.end_cpu_access = ion_dma_buf_end_cpu_access,
f9b67f00 Logan Gunthorpe       2017-04-19  378  	.map_atomic = ion_dma_buf_kmap,
f9b67f00 Logan Gunthorpe       2017-04-19  379  	.unmap_atomic = ion_dma_buf_kunmap,
f9b67f00 Logan Gunthorpe       2017-04-19  380  	.map = ion_dma_buf_kmap,
f9b67f00 Logan Gunthorpe       2017-04-19  381  	.unmap = ion_dma_buf_kunmap,
c30707be Rebecca Schultz Zavin 2013-12-13  382  };
c30707be Rebecca Schultz Zavin 2013-12-13  383  

:::::: The code at line 374 was first introduced by commit
:::::: 2a55e7b5e5446c970e00be1bca8536f4a58bf21c staging: android: ion: Call dma_map_sg for syncing and mapping

:::::: TO: Laura Abbott <labbott at redhat.com>
:::::: CC: Greg Kroah-Hartman <gregkh at linuxfoundation.org>

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