[PATCH 6.18 261/396] hwmon: (pmbus/core) notify on the hwmon device, not the i2c client

6.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Jardin <[email protected]>

commit a64a7e8a0b012ba81b0eadbd7afc84ab0dbfd70c upstream.

pmbus_notify() calls sysfs_notify() and kobject_uevent() on the i2c
client's kobject, but the alarm attributes live on the hwmon class
device registered by pmbus_do_probe(). Notifying the parent i2c device
is a no-op for both poll(POLLPRI) waiters and udev listeners: the named
attribute does not exist on that kobject.

Notify the hwmon device instead, so poll() wakes up and "change"
uevents fire on the inX_alarm/tempX_alarm attributes when SMBALERT#
reports a fault.

Fixes: f469bde9afd1 ("hwmon: (pmbus/core) Notify hwmon events")
Cc: [email protected] # v6.4+
Signed-off-by: Vincent Jardin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 drivers/hwmon/pmbus/pmbus_core.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2977,8 +2977,9 @@ static void pmbus_notify(struct pmbus_da
 
 		if (reg == sreg && page == spage && (smask & flags)) {
 			dev_dbg(data->dev, "sysfs notify: %s", da->attr.name);
-			sysfs_notify(&data->dev->kobj, NULL, da->attr.name);
-			kobject_uevent(&data->dev->kobj, KOBJ_CHANGE);
+			sysfs_notify(&data->hwmon_dev->kobj, NULL,
+				     da->attr.name);
+			kobject_uevent(&data->hwmon_dev->kobj, KOBJ_CHANGE);
 			flags &= ~smask;
 		}