Hi Laurent,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.7-rc4]
[cannot apply to linuxtv-media/master anholt/for-next next-20200505]
[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/Laurent-Pinchart/Drivers-for-the-BCM283x-CSI-2-CCP2-receiver-and-ISP/20200505-054310
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9851a0dee7c28514f149f7e4f60ec1b06286cc1b
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-191-gc51a0382-dirty
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c:1796:36: sparse: sparse: Using plain integer as NULL pointer
   drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c:472:48: sparse: sparse: non size-preserving integer to pointer cast

vim +1796 drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c

  1779	
  1780	int mmal_vchi_buffer_cleanup(struct mmal_buffer *buf)
  1781	{
  1782		struct mmal_msg_context *msg_context = buf->msg_context;
  1783	
  1784		if (msg_context)
  1785			release_msg_context(msg_context);
  1786		buf->msg_context = NULL;
  1787	
  1788		if (buf->vcsm_handle) {
  1789			int ret;
  1790	
  1791			pr_debug("%s: vc_sm_cma_free on handle %p\n", __func__,
  1792				 buf->vcsm_handle);
  1793			ret = vc_sm_cma_free(buf->vcsm_handle);
  1794			if (ret)
  1795				pr_err("%s: vcsm_free failed, ret %d\n", __func__, ret);
> 1796			buf->vcsm_handle = 0;
  1797		}
  1798		return 0;
  1799	}
  1800	EXPORT_SYMBOL_GPL(mmal_vchi_buffer_cleanup);
  1801	

---
0-DAY CI Kernel Test Service, Intel Corporation
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