diff options
| author | Vikash Chandola <vikash.chandola@linux.intel.com> | 2022-02-22 16:12:53 +0300 |
|---|---|---|
| committer | Vikash Chandola <vikash.chandola@intel.com> | 2022-02-24 07:20:51 +0300 |
| commit | db8468502ab72058e8a6ed238eb6bd830e2e4aea (patch) | |
| tree | 0ee82670f6add3e23174534c87729ef3d475b7b9 /drivers/hwmon | |
| parent | 5f8f4cf93521a80e630f5e41459f4f6e0b2ca776 (diff) | |
| download | linux-db8468502ab72058e8a6ed238eb6bd830e2e4aea.tar.xz | |
hwmon: (pmbus) Clear pmbus fault/warning bits after read
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>
(cherry picked from commit 35f165f08950a876f1b95a61d79c93678fba2fd6)
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index a4bf6f0fe013..ec44e4847c48 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -921,6 +921,11 @@ 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; |