hwmon: (pmbus/lm25066) Clamp limit attributes
Limits on all supported sensors and chips have to be within 0..0x0fff,
and limits are always positive.
Clamp written values in chip driver. Also clear value cache to ensure
that the actually written value is read back and reported correctly.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c
index 5489d70..f9f0c93 100644
--- a/drivers/hwmon/pmbus/lm25066.c
+++ b/drivers/hwmon/pmbus/lm25066.c
@@ -123,15 +123,28 @@
int ret;
switch (reg) {
+ case PMBUS_VOUT_UV_WARN_LIMIT:
+ case PMBUS_OT_FAULT_LIMIT:
+ case PMBUS_OT_WARN_LIMIT:
+ case PMBUS_VIN_UV_WARN_LIMIT:
+ case PMBUS_VIN_OV_WARN_LIMIT:
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
+ ret = pmbus_write_word_data(client, 0, reg, word);
+ pmbus_clear_cache(client);
+ break;
case PMBUS_IIN_OC_WARN_LIMIT:
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
ret = pmbus_write_word_data(client, 0,
LM25066_MFR_IIN_OC_WARN_LIMIT,
word);
+ pmbus_clear_cache(client);
break;
case PMBUS_PIN_OP_WARN_LIMIT:
+ word = ((s16)word < 0) ? 0 : clamp_val(word, 0, 0x0fff);
ret = pmbus_write_word_data(client, 0,
LM25066_MFR_PIN_OP_WARN_LIMIT,
word);
+ pmbus_clear_cache(client);
break;
case PMBUS_VIRT_RESET_PIN_HISTORY:
ret = pmbus_write_byte(client, 0, LM25066_CLEAR_PIN_PEAK);