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charset=us-ascii Content-Disposition: inline BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev In-Reply-To: <20250430-tegra210-emc-dt-v1-1-99896fa69341@gmail.com> References: <20250430-tegra210-emc-dt-v1-1-99896fa69341@gmail.com> TO: Aaron Kling via B4 Relay TO: Krzysztof Kozlowski TO: Thierry Reding TO: Jonathan Hunter CC: linux-kernel@vger.kernel.org CC: linux-tegra@vger.kernel.org CC: Aaron Kling Hi Aaron, kernel test robot noticed the following build warnings: [auto build test WARNING on 8bac8898fe398ffa3e09075ecea2be511725fb0b] url: https://github.com/intel-lab-lkp/linux/commits/Aaron-Kling-via-B4-Relay/memory-tegra210-emc-Support-Device-Tree-EMC-Tables/20250501-020252 base: 8bac8898fe398ffa3e09075ecea2be511725fb0b patch link: https://lore.kernel.org/r/20250430-tegra210-emc-dt-v1-1-99896fa69341%40gmail.com patch subject: [PATCH] memory: tegra210-emc: Support Device Tree EMC Tables :::::: branch date: 8 days ago :::::: commit date: 8 days ago config: loongarch-randconfig-r071-20250502 (https://download.01.org/0day-ci/archive/20250509/202505090927.326G2S8V-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 14.2.0 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202505090927.326G2S8V-lkp@intel.com/ smatch warnings: drivers/memory/tegra/tegra210-emc-core.c:2081 tegra210_emc_probe() warn: missing unwind goto? vim +2081 drivers/memory/tegra/tegra210-emc-core.c 10de21148f7d28 Joseph Lo 2019-05-29 2029 10de21148f7d28 Joseph Lo 2019-05-29 2030 static int tegra210_emc_probe(struct platform_device *pdev) 10de21148f7d28 Joseph Lo 2019-05-29 2031 { 0553d7b204ef48 Thierry Reding 2020-04-03 2032 struct thermal_cooling_device *cd; 10de21148f7d28 Joseph Lo 2019-05-29 2033 unsigned long current_rate; 10de21148f7d28 Joseph Lo 2019-05-29 2034 struct tegra210_emc *emc; 10de21148f7d28 Joseph Lo 2019-05-29 2035 struct device_node *np; 10de21148f7d28 Joseph Lo 2019-05-29 2036 unsigned int i; 10de21148f7d28 Joseph Lo 2019-05-29 2037 int err; 48e6cf9a684da2 Aaron Kling 2025-04-30 2038 bool have_dt_tables = false; 10de21148f7d28 Joseph Lo 2019-05-29 2039 10de21148f7d28 Joseph Lo 2019-05-29 2040 emc = devm_kzalloc(&pdev->dev, sizeof(*emc), GFP_KERNEL); 10de21148f7d28 Joseph Lo 2019-05-29 2041 if (!emc) 10de21148f7d28 Joseph Lo 2019-05-29 2042 return -ENOMEM; 10de21148f7d28 Joseph Lo 2019-05-29 2043 10de21148f7d28 Joseph Lo 2019-05-29 2044 emc->clk = devm_clk_get(&pdev->dev, "emc"); 10de21148f7d28 Joseph Lo 2019-05-29 2045 if (IS_ERR(emc->clk)) 10de21148f7d28 Joseph Lo 2019-05-29 2046 return PTR_ERR(emc->clk); 10de21148f7d28 Joseph Lo 2019-05-29 2047 10de21148f7d28 Joseph Lo 2019-05-29 2048 platform_set_drvdata(pdev, emc); 10de21148f7d28 Joseph Lo 2019-05-29 2049 spin_lock_init(&emc->lock); 10de21148f7d28 Joseph Lo 2019-05-29 2050 emc->dev = &pdev->dev; 10de21148f7d28 Joseph Lo 2019-05-29 2051 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2052 emc->mc = devm_tegra_memory_controller_get(&pdev->dev); 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2053 if (IS_ERR(emc->mc)) 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2054 return PTR_ERR(emc->mc); 10de21148f7d28 Joseph Lo 2019-05-29 2055 10de21148f7d28 Joseph Lo 2019-05-29 2056 emc->regs = devm_platform_ioremap_resource(pdev, 0); 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2057 if (IS_ERR(emc->regs)) 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2058 return PTR_ERR(emc->regs); 10de21148f7d28 Joseph Lo 2019-05-29 2059 10de21148f7d28 Joseph Lo 2019-05-29 2060 for (i = 0; i < 2; i++) { 10de21148f7d28 Joseph Lo 2019-05-29 2061 emc->channel[i] = devm_platform_ioremap_resource(pdev, 1 + i); 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2062 if (IS_ERR(emc->channel[i])) 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2063 return PTR_ERR(emc->channel[i]); 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2064 10de21148f7d28 Joseph Lo 2019-05-29 2065 } 10de21148f7d28 Joseph Lo 2019-05-29 2066 10de21148f7d28 Joseph Lo 2019-05-29 2067 tegra210_emc_detect(emc); 10de21148f7d28 Joseph Lo 2019-05-29 2068 np = pdev->dev.of_node; 10de21148f7d28 Joseph Lo 2019-05-29 2069 0553d7b204ef48 Thierry Reding 2020-04-03 2070 /* attach to the nominal and (optional) derated tables */ 48e6cf9a684da2 Aaron Kling 2025-04-30 2071 if (of_reserved_mem_device_init_by_name(emc->dev, np, "nominal") >= 0) { 0553d7b204ef48 Thierry Reding 2020-04-03 2072 err = of_reserved_mem_device_init_by_name(emc->dev, np, "derated"); 0553d7b204ef48 Thierry Reding 2020-04-03 2073 if (err < 0 && err != -ENODEV) { 0553d7b204ef48 Thierry Reding 2020-04-03 2074 dev_err(emc->dev, "failed to get derated EMC table: %d\n", err); 0553d7b204ef48 Thierry Reding 2020-04-03 2075 goto release; 0553d7b204ef48 Thierry Reding 2020-04-03 2076 } 48e6cf9a684da2 Aaron Kling 2025-04-30 2077 } else { 48e6cf9a684da2 Aaron Kling 2025-04-30 2078 err = tegra210_emc_parse_dt(emc); 48e6cf9a684da2 Aaron Kling 2025-04-30 2079 if (err < 0) { 48e6cf9a684da2 Aaron Kling 2025-04-30 2080 dev_err(emc->dev, "failed to get EMC tables: %d\n", err); 48e6cf9a684da2 Aaron Kling 2025-04-30 @2081 return err; 48e6cf9a684da2 Aaron Kling 2025-04-30 2082 } 48e6cf9a684da2 Aaron Kling 2025-04-30 2083 48e6cf9a684da2 Aaron Kling 2025-04-30 2084 have_dt_tables = true; 48e6cf9a684da2 Aaron Kling 2025-04-30 2085 } 0553d7b204ef48 Thierry Reding 2020-04-03 2086 10de21148f7d28 Joseph Lo 2019-05-29 2087 /* validate the tables */ 0553d7b204ef48 Thierry Reding 2020-04-03 2088 if (emc->nominal) { 0553d7b204ef48 Thierry Reding 2020-04-03 2089 err = tegra210_emc_validate_timings(emc, emc->nominal, 10de21148f7d28 Joseph Lo 2019-05-29 2090 emc->num_timings); 10de21148f7d28 Joseph Lo 2019-05-29 2091 if (err < 0) 10de21148f7d28 Joseph Lo 2019-05-29 2092 goto release; 0553d7b204ef48 Thierry Reding 2020-04-03 2093 } 0553d7b204ef48 Thierry Reding 2020-04-03 2094 0553d7b204ef48 Thierry Reding 2020-04-03 2095 if (emc->derated) { 0553d7b204ef48 Thierry Reding 2020-04-03 2096 err = tegra210_emc_validate_timings(emc, emc->derated, 0553d7b204ef48 Thierry Reding 2020-04-03 2097 emc->num_timings); 0553d7b204ef48 Thierry Reding 2020-04-03 2098 if (err < 0) 0553d7b204ef48 Thierry Reding 2020-04-03 2099 goto release; 0553d7b204ef48 Thierry Reding 2020-04-03 2100 } 0553d7b204ef48 Thierry Reding 2020-04-03 2101 0553d7b204ef48 Thierry Reding 2020-04-03 2102 /* default to the nominal table */ 0553d7b204ef48 Thierry Reding 2020-04-03 2103 emc->timings = emc->nominal; 10de21148f7d28 Joseph Lo 2019-05-29 2104 10de21148f7d28 Joseph Lo 2019-05-29 2105 /* pick the current timing based on the current EMC clock rate */ 10de21148f7d28 Joseph Lo 2019-05-29 2106 current_rate = clk_get_rate(emc->clk) / 1000; 10de21148f7d28 Joseph Lo 2019-05-29 2107 10de21148f7d28 Joseph Lo 2019-05-29 2108 for (i = 0; i < emc->num_timings; i++) { 10de21148f7d28 Joseph Lo 2019-05-29 2109 if (emc->timings[i].rate == current_rate) { 10de21148f7d28 Joseph Lo 2019-05-29 2110 emc->last = &emc->timings[i]; 10de21148f7d28 Joseph Lo 2019-05-29 2111 break; 10de21148f7d28 Joseph Lo 2019-05-29 2112 } 10de21148f7d28 Joseph Lo 2019-05-29 2113 } 10de21148f7d28 Joseph Lo 2019-05-29 2114 10de21148f7d28 Joseph Lo 2019-05-29 2115 if (i == emc->num_timings) { 10de21148f7d28 Joseph Lo 2019-05-29 2116 dev_err(emc->dev, "no EMC table entry found for %lu kHz\n", 10de21148f7d28 Joseph Lo 2019-05-29 2117 current_rate); 10de21148f7d28 Joseph Lo 2019-05-29 2118 err = -ENOENT; 10de21148f7d28 Joseph Lo 2019-05-29 2119 goto release; 10de21148f7d28 Joseph Lo 2019-05-29 2120 } 10de21148f7d28 Joseph Lo 2019-05-29 2121 10de21148f7d28 Joseph Lo 2019-05-29 2122 /* pick a compatible clock change sequence for the EMC table */ 10de21148f7d28 Joseph Lo 2019-05-29 2123 for (i = 0; i < ARRAY_SIZE(tegra210_emc_sequences); i++) { 10de21148f7d28 Joseph Lo 2019-05-29 2124 const struct tegra210_emc_sequence *sequence = 10de21148f7d28 Joseph Lo 2019-05-29 2125 tegra210_emc_sequences[i]; 10de21148f7d28 Joseph Lo 2019-05-29 2126 10de21148f7d28 Joseph Lo 2019-05-29 2127 if (emc->timings[0].revision == sequence->revision) { 10de21148f7d28 Joseph Lo 2019-05-29 2128 emc->sequence = sequence; 10de21148f7d28 Joseph Lo 2019-05-29 2129 break; 10de21148f7d28 Joseph Lo 2019-05-29 2130 } 10de21148f7d28 Joseph Lo 2019-05-29 2131 } 10de21148f7d28 Joseph Lo 2019-05-29 2132 10de21148f7d28 Joseph Lo 2019-05-29 2133 if (!emc->sequence) { 10de21148f7d28 Joseph Lo 2019-05-29 2134 dev_err(&pdev->dev, "sequence %u not supported\n", 10de21148f7d28 Joseph Lo 2019-05-29 2135 emc->timings[0].revision); 10de21148f7d28 Joseph Lo 2019-05-29 2136 err = -ENOTSUPP; 10de21148f7d28 Joseph Lo 2019-05-29 2137 goto release; 10de21148f7d28 Joseph Lo 2019-05-29 2138 } 10de21148f7d28 Joseph Lo 2019-05-29 2139 10de21148f7d28 Joseph Lo 2019-05-29 2140 emc->offsets = &tegra210_emc_table_register_offsets; 0553d7b204ef48 Thierry Reding 2020-04-03 2141 emc->refresh = TEGRA210_EMC_REFRESH_NOMINAL; 10de21148f7d28 Joseph Lo 2019-05-29 2142 10de21148f7d28 Joseph Lo 2019-05-29 2143 emc->provider.owner = THIS_MODULE; 10de21148f7d28 Joseph Lo 2019-05-29 2144 emc->provider.dev = &pdev->dev; 10de21148f7d28 Joseph Lo 2019-05-29 2145 emc->provider.set_rate = tegra210_emc_set_rate; 10de21148f7d28 Joseph Lo 2019-05-29 2146 10de21148f7d28 Joseph Lo 2019-05-29 2147 emc->provider.configs = devm_kcalloc(&pdev->dev, emc->num_timings, 10de21148f7d28 Joseph Lo 2019-05-29 2148 sizeof(*emc->provider.configs), 10de21148f7d28 Joseph Lo 2019-05-29 2149 GFP_KERNEL); 10de21148f7d28 Joseph Lo 2019-05-29 2150 if (!emc->provider.configs) { 10de21148f7d28 Joseph Lo 2019-05-29 2151 err = -ENOMEM; 10de21148f7d28 Joseph Lo 2019-05-29 2152 goto release; 10de21148f7d28 Joseph Lo 2019-05-29 2153 } 10de21148f7d28 Joseph Lo 2019-05-29 2154 10de21148f7d28 Joseph Lo 2019-05-29 2155 emc->provider.num_configs = emc->num_timings; 10de21148f7d28 Joseph Lo 2019-05-29 2156 10de21148f7d28 Joseph Lo 2019-05-29 2157 for (i = 0; i < emc->provider.num_configs; i++) { 10de21148f7d28 Joseph Lo 2019-05-29 2158 struct tegra210_emc_timing *timing = &emc->timings[i]; 10de21148f7d28 Joseph Lo 2019-05-29 2159 struct tegra210_clk_emc_config *config = 10de21148f7d28 Joseph Lo 2019-05-29 2160 &emc->provider.configs[i]; 10de21148f7d28 Joseph Lo 2019-05-29 2161 u32 value; 10de21148f7d28 Joseph Lo 2019-05-29 2162 10de21148f7d28 Joseph Lo 2019-05-29 2163 config->rate = timing->rate * 1000UL; 10de21148f7d28 Joseph Lo 2019-05-29 2164 config->value = timing->clk_src_emc; 10de21148f7d28 Joseph Lo 2019-05-29 2165 10de21148f7d28 Joseph Lo 2019-05-29 2166 value = timing->burst_mc_regs[MC_EMEM_ARB_MISC0_INDEX]; 10de21148f7d28 Joseph Lo 2019-05-29 2167 10de21148f7d28 Joseph Lo 2019-05-29 2168 if ((value & MC_EMEM_ARB_MISC0_EMC_SAME_FREQ) == 0) 10de21148f7d28 Joseph Lo 2019-05-29 2169 config->same_freq = false; 10de21148f7d28 Joseph Lo 2019-05-29 2170 else 10de21148f7d28 Joseph Lo 2019-05-29 2171 config->same_freq = true; 10de21148f7d28 Joseph Lo 2019-05-29 2172 } 10de21148f7d28 Joseph Lo 2019-05-29 2173 10de21148f7d28 Joseph Lo 2019-05-29 2174 err = tegra210_clk_emc_attach(emc->clk, &emc->provider); 10de21148f7d28 Joseph Lo 2019-05-29 2175 if (err < 0) { 10de21148f7d28 Joseph Lo 2019-05-29 2176 dev_err(&pdev->dev, "failed to attach to EMC clock: %d\n", err); 10de21148f7d28 Joseph Lo 2019-05-29 2177 goto release; 10de21148f7d28 Joseph Lo 2019-05-29 2178 } 10de21148f7d28 Joseph Lo 2019-05-29 2179 10de21148f7d28 Joseph Lo 2019-05-29 2180 emc->clkchange_delay = 100; 10de21148f7d28 Joseph Lo 2019-05-29 2181 emc->training_interval = 100; 10de21148f7d28 Joseph Lo 2019-05-29 2182 dev_set_drvdata(emc->dev, emc); 10de21148f7d28 Joseph Lo 2019-05-29 2183 0553d7b204ef48 Thierry Reding 2020-04-03 2184 timer_setup(&emc->refresh_timer, tegra210_emc_poll_refresh, 0553d7b204ef48 Thierry Reding 2020-04-03 2185 TIMER_DEFERRABLE); 0553d7b204ef48 Thierry Reding 2020-04-03 2186 atomic_set(&emc->refresh_poll, 0); 0553d7b204ef48 Thierry Reding 2020-04-03 2187 emc->refresh_poll_interval = 1000; 0553d7b204ef48 Thierry Reding 2020-04-03 2188 10de21148f7d28 Joseph Lo 2019-05-29 2189 timer_setup(&emc->training, tegra210_emc_train, 0); 10de21148f7d28 Joseph Lo 2019-05-29 2190 10de21148f7d28 Joseph Lo 2019-05-29 2191 tegra210_emc_debugfs_init(emc); 10de21148f7d28 Joseph Lo 2019-05-29 2192 0553d7b204ef48 Thierry Reding 2020-04-03 2193 cd = devm_thermal_of_cooling_device_register(emc->dev, np, "emc", emc, 0553d7b204ef48 Thierry Reding 2020-04-03 2194 &tegra210_emc_cd_ops); 0553d7b204ef48 Thierry Reding 2020-04-03 2195 if (IS_ERR(cd)) { 0553d7b204ef48 Thierry Reding 2020-04-03 2196 err = PTR_ERR(cd); 0553d7b204ef48 Thierry Reding 2020-04-03 2197 dev_err(emc->dev, "failed to register cooling device: %d\n", 0553d7b204ef48 Thierry Reding 2020-04-03 2198 err); 0553d7b204ef48 Thierry Reding 2020-04-03 2199 goto detach; 0553d7b204ef48 Thierry Reding 2020-04-03 2200 } 0553d7b204ef48 Thierry Reding 2020-04-03 2201 10de21148f7d28 Joseph Lo 2019-05-29 2202 return 0; 10de21148f7d28 Joseph Lo 2019-05-29 2203 0553d7b204ef48 Thierry Reding 2020-04-03 2204 detach: 0553d7b204ef48 Thierry Reding 2020-04-03 2205 debugfs_remove_recursive(emc->debugfs.root); 0553d7b204ef48 Thierry Reding 2020-04-03 2206 tegra210_clk_emc_detach(emc->clk); 10de21148f7d28 Joseph Lo 2019-05-29 2207 release: 48e6cf9a684da2 Aaron Kling 2025-04-30 2208 if (!have_dt_tables) 10de21148f7d28 Joseph Lo 2019-05-29 2209 of_reserved_mem_device_release(emc->dev); 6c6bd2075f01f8 Dmitry Osipenko 2020-11-04 2210 10de21148f7d28 Joseph Lo 2019-05-29 2211 return err; 10de21148f7d28 Joseph Lo 2019-05-29 2212 } 10de21148f7d28 Joseph Lo 2019-05-29 2213 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki