[renesas:topic/sdr104-v4 3/4] drivers/mmc/host/sh_mobile_sdhi.c:455:10: warning: 'return' with a val

[renesas:topic/sdr104-v4 3/4] drivers/mmc/host/sh_mobile_sdhi.c:455:10: warning: 'return' with a val

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git topic/sdr104-v4
head:   05e468b9e81e2710d19038b40931e7dc1387804c
commit: 501d962d362d87ac3cd9fda212fff5800eff34ea [3/4] mmc: sh_mobile_sdhi: Add tuning support
config: arm-shmobile_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 5.4.0-6) 5.4.0 20160609
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 501d962d362d87ac3cd9fda212fff5800eff34ea
        # 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_hw_reset':
>> drivers/mmc/host/sh_mobile_sdhi.c:455:10: warning: 'return' with a value, in function returning void
      return 0;
             ^

vim +/return +455 drivers/mmc/host/sh_mobile_sdhi.c

   439		    SH_MOBILE_SDHI_SCC_RVSCNTL_RVSEN &&
   440		    sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_RVSREQ) &
   441		    SH_MOBILE_SDHI_SCC_RVSREQ_RVSERR) {
   442			/* Clear SCC error */
   443			sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSREQ, 0);
   444			return true;
   445		}
   446	
   447		return false;
   448	}
   449	
   450	static void sh_mobile_sdhi_hw_reset(struct tmio_mmc_host *host)
   451	{
   452		struct sh_mobile_sdhi *priv;
   453	
   454		if (host->mmc->caps & MMC_CAP_UHS_SDR104)
 > 455			return 0;
   456	
   457		priv = host_to_priv(host);
   458	
   459		/* Reset SCC */
   460		sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
   461				sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
   462	
   463		sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_CKSEL,

---
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