Patch "drm/client: Test for connectors before sending hotplug event" has been added to the 6.2-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/client: Test for connectors before sending hotplug event

to the 6.2-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-client-test-for-connectors-before-sending-hotplu.patch
and it can be found in the queue-6.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 06e7f9c5415a8a6c3cef1fdbc82a7198175cefa2
Author: Thomas Zimmermann <tzimmermann@xxxxxxx>
Date:   Wed Jan 25 21:04:06 2023 +0100

    drm/client: Test for connectors before sending hotplug event
    
    [ Upstream commit c2bb3be64eb7182285846123219230375af61abd ]
    
    Test for connectors in the client code and remove a similar test
    from the generic fbdev emulation. Do nothing if the test fails.
    Not having connectors indicates a driver bug.
    
    Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
    Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
    Link: https://patchwork.freedesktop.org/patch/msgid/20230125200415.14123-2-tzimmermann@xxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c
index 056ab9d5f313b..313cbabb12b2d 100644
--- a/drivers/gpu/drm/drm_client.c
+++ b/drivers/gpu/drm/drm_client.c
@@ -198,6 +198,11 @@ void drm_client_dev_hotplug(struct drm_device *dev)
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		return;
 
+	if (!dev->mode_config.num_connector) {
+		drm_dbg_kms(dev, "No connectors found, will not send hotplug events!\n");
+		return;
+	}
+
 	mutex_lock(&dev->clientlist_mutex);
 	list_for_each_entry(client, &dev->clientlist, list) {
 		if (!client->funcs || !client->funcs->hotplug)
diff --git a/drivers/gpu/drm/drm_fbdev_generic.c b/drivers/gpu/drm/drm_fbdev_generic.c
index 593aa3283792b..215fe16ff1fb4 100644
--- a/drivers/gpu/drm/drm_fbdev_generic.c
+++ b/drivers/gpu/drm/drm_fbdev_generic.c
@@ -390,11 +390,6 @@ static int drm_fbdev_client_hotplug(struct drm_client_dev *client)
 	if (dev->fb_helper)
 		return drm_fb_helper_hotplug_event(dev->fb_helper);
 
-	if (!dev->mode_config.num_connector) {
-		drm_dbg_kms(dev, "No connectors found, will not create framebuffer!\n");
-		return 0;
-	}
-
 	drm_fb_helper_prepare(dev, fb_helper, &drm_fb_helper_generic_funcs);
 
 	ret = drm_fb_helper_init(dev, fb_helper);



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