Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.10 07/14] hwmon: (pmbus) Clear pmbus fault/warning bits after read | Date | Tue, 1 Mar 2022 15:18:19 -0500 |
| |
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.intel.com 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 b0e2820a2d578..71798fde2ef0c 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -898,6 +898,11 @@ 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; -- 2.34.1
| |