Commit 62711847 authored by Corey Minyard's avatar Corey Minyard
Browse files

ipmi: Add a maintenance mode sysfs file 



So you can see if it's in maintenance mode and see how long is left.

Signed-off-by: default avatarCorey Minyard <corey@minyard.net>
Tested-by: default avatarFrederick Lawler <fred@cloudflare.com>
parent 30f6c9d5

drivers/char/ipmi/ipmi_msghandler.c

+23 −0
Original line number Diff line number Diff line
@@ -434,6 +434,7 @@ struct ipmi_smi { 
	atomic_t nr_users;

	struct device_attribute nr_users_devattr;

	struct device_attribute nr_msgs_devattr;

	struct device_attribute maintenance_mode_devattr;





	/* Used for wake ups at startup. */
@@ -3521,6 +3522,19 @@ static ssize_t nr_msgs_show(struct device *dev, 
}

static DEVICE_ATTR_RO(nr_msgs);



static ssize_t maintenance_mode_show(struct device *dev,

				     struct device_attribute *attr,

				     char *buf)

{

	struct ipmi_smi *intf = container_of(attr,

					     struct ipmi_smi,

					     maintenance_mode_devattr);



	return sysfs_emit(buf, "%u %d\n", intf->maintenance_mode_state,

			  intf->auto_maintenance_timeout);

}

static DEVICE_ATTR_RO(maintenance_mode);



static void redo_bmc_reg(struct work_struct *work)

{

	struct ipmi_smi *intf = container_of(work, struct ipmi_smi,
@@ -3657,6 +3671,14 @@ int ipmi_add_smi(struct module *owner, 
		goto out_err_bmc_reg;

	}



	intf->maintenance_mode_devattr = dev_attr_maintenance_mode;

	sysfs_attr_init(&intf->maintenance_mode_devattr.attr);

	rv = device_create_file(intf->si_dev, &intf->maintenance_mode_devattr);

	if (rv) {

		device_remove_file(intf->si_dev, &intf->nr_users_devattr);

		goto out_err_bmc_reg;

	}



	intf->intf_num = i;

	mutex_unlock(&ipmi_interfaces_mutex);
@@ -3764,6 +3786,7 @@ void ipmi_unregister_smi(struct ipmi_smi *intf) 
	if (intf->handlers->shutdown)

		intf->handlers->shutdown(intf->send_info);



	device_remove_file(intf->si_dev, &intf->maintenance_mode_devattr);

	device_remove_file(intf->si_dev, &intf->nr_msgs_devattr);

	device_remove_file(intf->si_dev, &intf->nr_users_devattr);