[PATCH 01/13] dmaengine: of_dma: Add devm_of_dma_controller_register()

[kernel test robot]

Hi Frank,

kernel test robot noticed the following build errors:

[auto build test ERROR on 8f0b4cce4481fb22653697cced8d0d04027cb1e8]

url:    https://github.com/intel-lab-lkp/linux/commits/Frank-Li/dmaengine-of_dma-Add-devm_of_dma_controller_register/20260115-063955
base:   8f0b4cce4481fb22653697cced8d0d04027cb1e8
patch link:    https://lore.kernel.org/r/20260114-mxsdma-module-v1-1-9b2a9eaa4226%40nxp.com
patch subject: [PATCH 01/13] dmaengine: of_dma: Add devm_of_dma_controller_register()
config: x86_64-randconfig-r071-20260115 (https://download.01.org/0day-ci/archive/20260115/202601151942.cEs9s8Tj-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.4.0-5) 12.4.0
smatch version: v0.5.0-8985-g2614ff1a
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260115/202601151942.cEs9s8Tj-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601151942.cEs9s8Tj-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/tty/serial/fsl_lpuart.c:22:
>> include/linux/of_dma.h:88:1: error: return type defaults to 'int' [-Werror=implicit-int]
      88 | devm_of_dma_controller_register(struct device *dev, struct device_node *np,
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/int +88 include/linux/of_dma.h

    86	
    87	static inline
  > 88	devm_of_dma_controller_register(struct device *dev, struct device_node *np,
    89					struct dma_chan *(*of_dma_xlate)
    90					(struct of_phandle_args *, struct of_dma *),
    91					void *data)
    92	{
    93		return -ENODEV;
    94	}
    95	

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