From: Vikash Chandola vikash.chandola@linux.intel.com
[ Upstream commit 35f165f08950a876f1b95a61d79c93678fba2fd6 ]
Almost all fault/warning bits in pmbus status registers remain set even after fault/warning condition are removed. As per pmbus specification these faults must be cleared by user. Modify hwmon behavior to clear fault/warning bit after fetching data if fault/warning bit was set. This allows to get fresh data in next read.
Signed-off-by: Vikash Chandola vikash.chandola@linux.intel.com Link: https://lore.kernel.org/r/20220222131253.2426834-1-vikash.chandola@linux.int... Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hwmon/pmbus/pmbus_core.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 776ee2237be20..ac2fbee1ba9c0 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -911,6 +911,11 @@ static int pmbus_get_boolean(struct i2c_client *client, struct pmbus_boolean *b, pmbus_update_sensor_data(client, s2);
regval = status & mask; + if (regval) { + ret = pmbus_write_byte_data(client, page, reg, regval); + if (ret) + goto unlock; + } if (s1 && s2) { s64 v1, v2;