On Fri, Feb 04, 2022 at 05:30:45PM +0100, Eugene Shalygin wrote:
> Temperature sensor readings are signed, which is hinted by their blank
> value (oxd8, 216 as unsigned and -40 as signed). T_Sensor, Crosshair
> VIII Hero, and a freezer were used to confirm that.
>
> Here we read fan sensors as signed too, because with their typical
> values and 2-byte width, I can't tell a difference between signed and
> unsigned, as I don't have a high speed chipset fan.
>
Hmm, I hope we won't get a situation where an unsigned is reported
and needed, but I guess we can deal with that if/when it happens.
> Signed-off-by: Eugene Shalygin <eugene.shalygin@xxxxxxxxx>
Applied.
Thanks,
Guenter
> ---
> drivers/hwmon/asus-ec-sensors.c | 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/hwmon/asus-ec-sensors.c b/drivers/hwmon/asus-ec-sensors.c
> index 05244209c0c6..8a04c76527a4 100644
> --- a/drivers/hwmon/asus-ec-sensors.c
> +++ b/drivers/hwmon/asus-ec-sensors.c
> @@ -221,7 +221,7 @@ static const struct dmi_system_id asus_ec_dmi_table[] __initconst = {
>
> struct ec_sensor {
> unsigned int info_index;
> - u32 cached_value;
> + s32 cached_value;
> };
>
> struct ec_sensors_data {
> @@ -408,15 +408,15 @@ static int asus_ec_block_read(const struct device *dev,
> return status;
> }
>
> -static inline u32 get_sensor_value(const struct ec_sensor_info *si, u8 *data)
> +static inline s32 get_sensor_value(const struct ec_sensor_info *si, u8 *data)
> {
> switch (si->addr.components.size) {
> case 1:
> - return *data;
> + return (s8)*data;
> case 2:
> - return get_unaligned_be16(data);
> + return (s16)get_unaligned_be16(data);
> case 4:
> - return get_unaligned_be32(data);
> + return (s32)get_unaligned_be32(data);
> default:
> return 0;
> }
> @@ -462,7 +462,7 @@ static int update_ec_sensors(const struct device *dev,
> return status;
> }
>
> -static int scale_sensor_value(u32 value, int data_type)
> +static long scale_sensor_value(s32 value, int data_type)
> {
> switch (data_type) {
> case hwmon_curr:
> @@ -476,7 +476,7 @@ static int scale_sensor_value(u32 value, int data_type)
>
> static int get_cached_value_or_update(const struct device *dev,
> int sensor_index,
> - struct ec_sensors_data *state, u32 *value)
> + struct ec_sensors_data *state, s32 *value)
> {
> if (time_after(jiffies, state->last_updated + HZ)) {
> if (update_ec_sensors(dev, state)) {
> @@ -499,7 +499,7 @@ static int asus_ec_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
> u32 attr, int channel, long *val)
> {
> int ret;
> - u32 value = 0;
> + s32 value = 0;
>
> struct ec_sensors_data *state = dev_get_drvdata(dev);
> int sidx = find_ec_sensor_index(state, type, channel);
