38 struct sht21 {  struct
87 	struct sht21 *sht21 = dev_get_drvdata(dev);  in sht21_update_measurements()  local
88 	struct i2c_client *client = sht21->client;  in sht21_update_measurements()
90 	mutex_lock(&sht21->lock);  in sht21_update_measurements()
96 	if (time_after(jiffies, sht21->last_update + HZ / 2) || !sht21->valid) {  in sht21_update_measurements()
101 		sht21->temperature = sht21_temp_ticks_to_millicelsius(ret);  in sht21_update_measurements()
106 		sht21->humidity = sht21_rh_ticks_to_per_cent_mille(ret);  in sht21_update_measurements()
107 		sht21->last_update = jiffies;  in sht21_update_measurements()
108 		sht21->valid = true;  in sht21_update_measurements()
111 	mutex_unlock(&sht21->lock);  in sht21_update_measurements()
129 	struct sht21 *sht21 = dev_get_drvdata(dev);  in sht21_temperature_show()  local
135 	return sprintf(buf, "%d\n", sht21->temperature);  in sht21_temperature_show()
150 	struct sht21 *sht21 = dev_get_drvdata(dev);  in sht21_humidity_show()  local
156 	return sprintf(buf, "%d\n", sht21->humidity);  in sht21_humidity_show()
159 static ssize_t eic_read(struct sht21 *sht21)  in eic_read()  argument
161 	struct i2c_client *client = sht21->client;  in eic_read()
202 	ret = snprintf(sht21->eic, sizeof(sht21->eic),  in eic_read()
208 		sht21->eic[0] = 0;  in eic_read()
226 	struct sht21 *sht21 = dev_get_drvdata(dev);  in eic_show()  local
229 	ret = sizeof(sht21->eic) - 1;  in eic_show()
230 	mutex_lock(&sht21->lock);  in eic_show()
231 	if (!sht21->eic[0])  in eic_show()
232 		ret = eic_read(sht21);  in eic_show()
234 		memcpy(buf, sht21->eic, ret);  in eic_show()
235 	mutex_unlock(&sht21->lock);  in eic_show()
251 ATTRIBUTE_GROUPS(sht21);
257 	struct sht21 *sht21;  in sht21_probe()  local
266 	sht21 = devm_kzalloc(dev, sizeof(*sht21), GFP_KERNEL);  in sht21_probe()
267 	if (!sht21)  in sht21_probe()
270 	sht21->client = client;  in sht21_probe()
272 	mutex_init(&sht21->lock);  in sht21_probe()
275 							   sht21, sht21_groups);  in sht21_probe()