diff options
| author | Ingo Molnar <mingo@kernel.org> | 2016-01-06 13:02:29 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-01-06 13:02:29 +0300 |
| commit | 567bee2803cb46caeb6011de5b738fde33dc3896 (patch) | |
| tree | 05bab01377bffa356bfbe06c4b6193b23b7c24ca /drivers/hwmon | |
| parent | aa0b7ae06387d40a988ce16a189082dee6e570bc (diff) | |
| parent | 093e5840ae76f1082633503964d035f40ed0216d (diff) | |
| download | linux-567bee2803cb46caeb6011de5b738fde33dc3896.tar.xz | |
Merge branch 'sched/urgent' into sched/core, to pick up fixes before merging new patches
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/hwmon/tmp102.c | 16 |
2 files changed, 16 insertions, 1 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 8f59f057cdf4..80a73bfc1a65 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1217,6 +1217,7 @@ config SENSORS_PWM_FAN config SENSORS_SHT15 tristate "Sensiron humidity and temperature sensors. SHT15 and compat." depends on GPIOLIB || COMPILE_TEST + select BITREVERSE help If you say yes here you get support for the Sensiron SHT10, SHT11, SHT15, SHT71, SHT75 humidity and temperature sensors. diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c index 65482624ea2c..5289aa0980a8 100644 --- a/drivers/hwmon/tmp102.c +++ b/drivers/hwmon/tmp102.c @@ -58,6 +58,7 @@ struct tmp102 { u16 config_orig; unsigned long last_update; int temp[3]; + bool first_time; }; /* convert left adjusted 13-bit TMP102 register value to milliCelsius */ @@ -93,6 +94,7 @@ static struct tmp102 *tmp102_update_device(struct device *dev) tmp102->temp[i] = tmp102_reg_to_mC(status); } tmp102->last_update = jiffies; + tmp102->first_time = false; } mutex_unlock(&tmp102->lock); return tmp102; @@ -102,6 +104,12 @@ static int tmp102_read_temp(void *dev, int *temp) { struct tmp102 *tmp102 = tmp102_update_device(dev); + /* Is it too early even to return a conversion? */ + if (tmp102->first_time) { + dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__); + return -EAGAIN; + } + *temp = tmp102->temp[0]; return 0; @@ -114,6 +122,10 @@ static ssize_t tmp102_show_temp(struct device *dev, struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); struct tmp102 *tmp102 = tmp102_update_device(dev); + /* Is it too early even to return a read? */ + if (tmp102->first_time) + return -EAGAIN; + return sprintf(buf, "%d\n", tmp102->temp[sda->index]); } @@ -207,7 +219,9 @@ static int tmp102_probe(struct i2c_client *client, status = -ENODEV; goto fail_restore_config; } - tmp102->last_update = jiffies - HZ; + tmp102->last_update = jiffies; + /* Mark that we are not ready with data until conversion is complete */ + tmp102->first_time = true; mutex_init(&tmp102->lock); hwmon_dev = hwmon_device_register_with_groups(dev, client->name, |