[PATCH v3 25/29] platform/x86: ideapad-laptop: send notification about touchpad state change to sysfs

[Barnabás Pőcze <pobrn@xxxxxxxxxxxxxx>]

Consumers can determine if the value of an attribute changed much more
easily if changes are broadcast using sysfs_notify(), so utilize it.

Signed-off-by: Barnabás Pőcze <pobrn@xxxxxxxxxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 2068831c5fe8..76b723f32c84 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -1224,6 +1224,7 @@ static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
 		 */
 		i8042_command(&param, value ? I8042_CMD_AUX_ENABLE : I8042_CMD_AUX_DISABLE);
 		ideapad_input_report(priv, value ? 67 : 66);
+		sysfs_notify(&priv->platform_device->dev.kobj, NULL, "touchpad");
 	}
 }
 
-- 
2.30.0