[renesas:topic/sdhi-gen3-dma-v2 5/5] drivers/mmc/host/sh_mobile_sdhi.c:148:1: warning: control reach

[renesas:topic/sdhi-gen3-dma-v2 5/5] drivers/mmc/host/sh_mobile_sdhi.c:148:1: warning: control reach

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git topic/sdhi-gen3-dma-v2
head:   8af14f568146e167ad76dbf416246cd3be557f7c
commit: 8af14f568146e167ad76dbf416246cd3be557f7c [5/5] mmc: renesas_sdhi: add support for R-Car Gen3 SDHI DMAC
config: arm-shmobile_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 5.3.1-8) 5.3.1 20160205
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 8af14f568146e167ad76dbf416246cd3be557f7c
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All warnings (new ones prefixed by >>):

   drivers/mmc/host/sh_mobile_sdhi.c: In function 'sh_mobile_sdhi_init_dma':
>> drivers/mmc/host/sh_mobile_sdhi.c:148:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +148 drivers/mmc/host/sh_mobile_sdhi.c

   132	#else
   133	static int sdhi_internal_dmac_init_dma(void)
   134	{
   135		return -EINVAL;
   136	}
   137	#endif
   138	
   139	static int sh_mobile_sdhi_init_dma(enum tmio_mmc_dmac_type dmac_type)
   140	{
   141		switch (dmac_type) {
   142		case TMIO_MMC_INTERNAL_DMAC:
   143			return sdhi_internal_dmac_init_dma();
   144	
   145		case TMIO_MMC_SYSC_DMAC:
   146			return sdhi_sysc_dmac_init_dma();
   147		}
 > 148	}
   149	
   150	static void sh_mobile_sdhi_sdbuf_width(struct tmio_mmc_host *host, int width)
   151	{
   152		u32 val;
   153	
   154		/*
   155		 * see also
   156		 *	sh_mobile_sdhi_of_data :: dma_buswidth

---
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