iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

hwmon: (pmbus) Clear pmbus fault/warning bits after read

Browse Source 
[ 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>
This commit is contained in:
Vikash Chandola 2022-02-22 13:12:53 +00:00 committed by Greg Kroah-Hartman
parent 8d5e69d8fb
commit bb9795b6da
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/hwmon/pmbus/pmbus_core.c
View File

@ -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;