Hi Lars, I love your patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on linus/master v5.9-rc2 next-20200824] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Lars-Povlsen/mmc-Adding-support-for-Microchip-Sparx5-SoC/20200824-231355 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): 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 COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/mmc/host/sdhci-of-sparx5.c:158:5: warning: no previous prototype for 'sdhci_sparx5_probe' [-Wmissing-prototypes] 158 | int sdhci_sparx5_probe(struct platform_device *pdev) | ^~~~~~~~~~~~~~~~~~ # https://github.com/0day-ci/linux/commit/dd46278eff00cacc114d229429f51fbdbcb2e8f2 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Lars-Povlsen/mmc-Adding-support-for-Microchip-Sparx5-SoC/20200824-231355 git checkout dd46278eff00cacc114d229429f51fbdbcb2e8f2 vim +/sdhci_sparx5_probe +158 drivers/mmc/host/sdhci-of-sparx5.c 157 > 158 int sdhci_sparx5_probe(struct platform_device *pdev) 159 { 160 int ret; 161 const char *syscon = "microchip,sparx5-cpu-syscon"; 162 struct sdhci_host *host; 163 struct sdhci_pltfm_host *pltfm_host; 164 struct sdhci_sparx5_data *sdhci_sparx5; 165 struct device_node *np = pdev->dev.of_node; 166 u32 value; 167 u32 extra; 168 169 host = sdhci_pltfm_init(pdev, &sdhci_sparx5_pdata, 170 sizeof(*sdhci_sparx5)); 171 172 if (IS_ERR(host)) 173 return PTR_ERR(host); 174 175 /* 176 * extra adma table cnt for cross 128M boundary handling. 177 */ 178 extra = DIV_ROUND_UP_ULL(dma_get_required_mask(&pdev->dev), SZ_128M); 179 if (extra > SDHCI_MAX_SEGS) 180 extra = SDHCI_MAX_SEGS; 181 host->adma_table_cnt += extra; 182 183 pltfm_host = sdhci_priv(host); 184 sdhci_sparx5 = sdhci_pltfm_priv(pltfm_host); 185 sdhci_sparx5->host = host; 186 187 pltfm_host->clk = devm_clk_get(&pdev->dev, "core"); 188 if (IS_ERR(pltfm_host->clk)) { 189 ret = PTR_ERR(pltfm_host->clk); 190 dev_err(&pdev->dev, "failed to get core clk: %d\n", ret); 191 goto free_pltfm; 192 } 193 ret = clk_prepare_enable(pltfm_host->clk); 194 if (ret) 195 goto free_pltfm; 196 197 if (!of_property_read_u32(np, "microchip,clock-delay", &value) && 198 (value > 0 && value <= MSHC_DLY_CC_MAX)) 199 sdhci_sparx5->delay_clock = value; 200 201 sdhci_get_of_property(pdev); 202 203 ret = mmc_of_parse(host->mmc); 204 if (ret) 205 goto err_clk; 206 207 sdhci_sparx5->cpu_ctrl = syscon_regmap_lookup_by_compatible(syscon); 208 if (IS_ERR(sdhci_sparx5->cpu_ctrl)) { 209 dev_err(&pdev->dev, "No CPU syscon regmap !\n"); 210 ret = PTR_ERR(sdhci_sparx5->cpu_ctrl); 211 goto err_clk; 212 } 213 214 if (sdhci_sparx5->delay_clock >= 0) 215 sparx5_set_delay(host, sdhci_sparx5->delay_clock); 216 217 if (!mmc_card_is_removable(host->mmc)) { 218 /* Do a HW reset of eMMC card */ 219 sdhci_sparx5_reset_emmc(host); 220 /* Update EMMC_CTRL */ 221 sdhci_sparx5_set_emmc(host); 222 /* If eMMC, disable SD and SDIO */ 223 host->mmc->caps2 |= (MMC_CAP2_NO_SDIO|MMC_CAP2_NO_SD); 224 } 225 226 ret = sdhci_add_host(host); 227 if (ret) 228 goto err_clk; 229 230 /* Set AXI bus master to use un-cached access (for DMA) */ 231 if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA) && 232 IS_ENABLED(CONFIG_DMA_DECLARE_COHERENT)) 233 sparx5_set_cacheable(host, ACP_CACHE_FORCE_ENA); 234 235 pr_debug("%s: SDHC version: 0x%08x\n", 236 mmc_hostname(host->mmc), sdhci_readl(host, MSHC2_VERSION)); 237 pr_debug("%s: SDHC type: 0x%08x\n", 238 mmc_hostname(host->mmc), sdhci_readl(host, MSHC2_TYPE)); 239 240 return ret; 241 242 err_clk: 243 clk_disable_unprepare(pltfm_host->clk); 244 free_pltfm: 245 sdhci_pltfm_free(pdev); 246 return ret; 247 } 248 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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