Hi Tomer, I love your patch! Perhaps something to improve: [auto build test WARNING on hwmon/hwmon-next] [also build test WARNING on v4.18-rc2 next-20180622] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Tomer-Maimon/dt-binding-hwmon-Add-NPCM7xx-PWM-and-Fan-controller-documentation/20180624-205017 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next New smatch warnings: drivers/hwmon/npcm750-pwm-fan.c:261 npcm7xx_pwm_config_set() warn: inconsistent returns 'mutex:&data->pwm_lock[module]'. Locked on: line 245 Unlocked on: line 261 Old smatch warnings: drivers/hwmon/npcm750-pwm-fan.c:836 npcm7xx_pwm_cz_set_cur_state() warn: potential spectre issue 'cdev->cooling_levels' # https://github.com/0day-ci/linux/commit/5ef6a0a11de5f3f0711993a20b13820cc0884c7e git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 5ef6a0a11de5f3f0711993a20b13820cc0884c7e vim +261 drivers/hwmon/npcm750-pwm-fan.c 5ef6a0a1 Tomer Maimon 2018-06-24 210 5ef6a0a1 Tomer Maimon 2018-06-24 211 static int npcm7xx_pwm_config_set(struct npcm7xx_pwm_fan_data *data, 5ef6a0a1 Tomer Maimon 2018-06-24 212 int channel, u16 val) 5ef6a0a1 Tomer Maimon 2018-06-24 213 { 5ef6a0a1 Tomer Maimon 2018-06-24 214 u32 pwm_ch = (channel % NPCM7XX_PWM_MAX_CHN_NUM_IN_A_MODULE); 5ef6a0a1 Tomer Maimon 2018-06-24 215 u32 module = (channel / NPCM7XX_PWM_MAX_CHN_NUM_IN_A_MODULE); 5ef6a0a1 Tomer Maimon 2018-06-24 216 u32 tmp_buf, ctrl_en_bit, env_bit; 5ef6a0a1 Tomer Maimon 2018-06-24 217 5ef6a0a1 Tomer Maimon 2018-06-24 218 /* 5ef6a0a1 Tomer Maimon 2018-06-24 219 * Config PWM Comparator register for setting duty cycle 5ef6a0a1 Tomer Maimon 2018-06-24 220 */ 5ef6a0a1 Tomer Maimon 2018-06-24 221 mutex_lock(&data->pwm_lock[module]); 5ef6a0a1 Tomer Maimon 2018-06-24 222 5ef6a0a1 Tomer Maimon 2018-06-24 223 /* write new CMR value */ 5ef6a0a1 Tomer Maimon 2018-06-24 224 iowrite32(val, NPCM7XX_PWM_REG_CMRx(data->pwm_base, module, pwm_ch)); 5ef6a0a1 Tomer Maimon 2018-06-24 225 tmp_buf = ioread32(NPCM7XX_PWM_REG_CR(data->pwm_base, module)); 5ef6a0a1 Tomer Maimon 2018-06-24 226 5ef6a0a1 Tomer Maimon 2018-06-24 227 switch (pwm_ch) { 5ef6a0a1 Tomer Maimon 2018-06-24 228 case 0: 5ef6a0a1 Tomer Maimon 2018-06-24 229 ctrl_en_bit = NPCM7XX_PWM_CTRL_CH0_EN_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 230 env_bit = NPCM7XX_PWM_CTRL_CH0_INV_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 231 break; 5ef6a0a1 Tomer Maimon 2018-06-24 232 case 1: 5ef6a0a1 Tomer Maimon 2018-06-24 233 ctrl_en_bit = NPCM7XX_PWM_CTRL_CH1_EN_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 234 env_bit = NPCM7XX_PWM_CTRL_CH1_INV_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 235 break; 5ef6a0a1 Tomer Maimon 2018-06-24 236 case 2: 5ef6a0a1 Tomer Maimon 2018-06-24 237 ctrl_en_bit = NPCM7XX_PWM_CTRL_CH2_EN_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 238 env_bit = NPCM7XX_PWM_CTRL_CH2_INV_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 239 break; 5ef6a0a1 Tomer Maimon 2018-06-24 240 case 3: 5ef6a0a1 Tomer Maimon 2018-06-24 241 ctrl_en_bit = NPCM7XX_PWM_CTRL_CH3_EN_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 242 env_bit = NPCM7XX_PWM_CTRL_CH3_INV_BIT; 5ef6a0a1 Tomer Maimon 2018-06-24 243 break; 5ef6a0a1 Tomer Maimon 2018-06-24 244 default: 5ef6a0a1 Tomer Maimon 2018-06-24 245 return -ENODEV; ^^^^^^^^^^^^^^ 5ef6a0a1 Tomer Maimon 2018-06-24 246 } 5ef6a0a1 Tomer Maimon 2018-06-24 247 5ef6a0a1 Tomer Maimon 2018-06-24 248 if (val == 0) { 5ef6a0a1 Tomer Maimon 2018-06-24 249 /* Disable PWM */ 5ef6a0a1 Tomer Maimon 2018-06-24 250 tmp_buf &= ~ctrl_en_bit; 5ef6a0a1 Tomer Maimon 2018-06-24 251 tmp_buf |= env_bit; 5ef6a0a1 Tomer Maimon 2018-06-24 252 } else { 5ef6a0a1 Tomer Maimon 2018-06-24 253 /* Enable PWM */ 5ef6a0a1 Tomer Maimon 2018-06-24 254 tmp_buf |= ctrl_en_bit; 5ef6a0a1 Tomer Maimon 2018-06-24 255 tmp_buf &= ~env_bit; 5ef6a0a1 Tomer Maimon 2018-06-24 256 } 5ef6a0a1 Tomer Maimon 2018-06-24 257 5ef6a0a1 Tomer Maimon 2018-06-24 258 iowrite32(tmp_buf, NPCM7XX_PWM_REG_CR(data->pwm_base, module)); 5ef6a0a1 Tomer Maimon 2018-06-24 259 mutex_unlock(&data->pwm_lock[module]); 5ef6a0a1 Tomer Maimon 2018-06-24 260 5ef6a0a1 Tomer Maimon 2018-06-24 @261 return 0; 5ef6a0a1 Tomer Maimon 2018-06-24 262 } 5ef6a0a1 Tomer Maimon 2018-06-24 263 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
