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ipmi: Add a maintenance mode sysfs file

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

Signed-off-by: Corey Minyard <corey@minyard.net>
Tested-by: Frederick Lawler <fred@cloudflare.com>
This commit is contained in:
Corey Minyard 2025-08-07 17:55:08 -05:00
parent 30f6c9d545
commit 627118470f
1 changed files with 23 additions and 0 deletions
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23
drivers/char/ipmi/ipmi_msghandler.c
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@ -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);