From: Patrick Rudolph <patrick.rudolph@xxxxxxxxxxxxx>
Observing I2C traffic revealed consecutive transmission of CLEAR_FAULT
commands. While this doesn't cause issues, it extends driver probe time.
Avoid invoking pmbus_clear_fault_page for virtual registers, as they're
managed by the driver, not the chip.
TEST: Verified using an I2C bus analyzer that only one CLEAR_FAULT
command is send instead 5 in a row.
Signed-off-by: Patrick Rudolph <patrick.rudolph@xxxxxxxxxxxxx>
Signed-off-by: Naresh Solanki <Naresh.Solanki@xxxxxxxxxxxxx>
---
drivers/hwmon/pmbus/pmbus_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 69a4e62b6c8d..cbfabdd69056 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -561,7 +561,8 @@ static bool pmbus_check_register(struct i2c_client *client,
rv = pmbus_check_status_cml(client);
if (rv < 0 && (data->flags & PMBUS_READ_STATUS_AFTER_FAILED_CHECK))
data->read_status(client, -1);
- pmbus_clear_fault_page(client, -1);
+ if (reg < PMBUS_VIRT_BASE)
+ pmbus_clear_fault_page(client, -1);
return rv >= 0;
}
base-commit: fc8df28be7155ddcf8731b4c85fd3372811ba5ac
--
2.41.0
