[PATCH v6 3/4] vkms: Do not send hotplug events for same connector status

[Nicolas Frattaroli <nicolas.frattaroli@collabora.com>]

From: Marius Vlad <marius.vlad@collabora.com>

Only send a new hotplug event when writing to the connector status
configfs entry if the connector status changed compared to its
previous value.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
---
 drivers/gpu/drm/vkms/vkms_configfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vkms/vkms_configfs.c b/drivers/gpu/drm/vkms/vkms_configfs.c
index 506666e21c91..d6e203d59b45 100644
--- a/drivers/gpu/drm/vkms/vkms_configfs.c
+++ b/drivers/gpu/drm/vkms/vkms_configfs.c
@@ -549,9 +549,11 @@ static ssize_t connector_status_store(struct config_item *item,
 		return -EINVAL;
 
 	scoped_guard(mutex, &connector->dev->lock) {
+		enum drm_connector_status old_status =
+			vkms_config_connector_get_status(connector->config);
 		vkms_config_connector_set_status(connector->config, status);
 
-		if (connector->dev->enabled)
+		if (connector->dev->enabled && old_status != status)
 			vkms_trigger_connector_hotplug(connector->dev->config->dev);
 	}
 

-- 
2.52.0