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Commit d830e27d authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (pmbus) Enable PEC if the controller supports it 



PMBus controllers optionally support PEC. Configure the driver
to use it if available to improve operational security.

Suggested-by: default avatarMichael Jones <mike@proclivis.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 2c052d42

drivers/hwmon/pmbus/pmbus_core.c

+5 −0
Original line number Original line Diff line number Diff line
@@ -1751,6 +1751,11 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, 
		}

		}

	}

	}





	/* Enable PEC if the controller supports it */

	ret = i2c_smbus_read_byte_data(client, PMBUS_CAPABILITY);

	if (ret >= 0 && (ret & PB_CAPABILITY_ERROR_CHECK))

		client->flags |= I2C_CLIENT_PEC;



	pmbus_clear_faults(client);

	pmbus_clear_faults(client);





	if (info->identify) {

	if (info->identify) {