Problem: When clear_cache() is called from within the pmbus_write_word_data() callback, the sensor data is set _after_ the function returns to pmbus_set_sensor(). The effect is that all sensor values are cleared except the one just written to. This behaviour prevents reloading of the sensor value as expected in the lm25066 driver. Proposed solution: Set the data field to -ENODATA after updates of the sensor value. This will force a read from the chip next time the sensor value is read. This will also ensure that the cached value matches the actual value stored in the chip. The impact would be that a sensor read after a write will always trigger a chip access. Erik Rosen (2): Clear sensor data after chip write Remove unnecessary pmbus_clear_cache function call drivers/hwmon/pmbus/lm25066.c | 5 ----- drivers/hwmon/pmbus/pmbus_core.c | 2 +- 2 files changed, 1 insertion(+), 6 deletions(-) -- 2.20.1
