From c2bb3be64eb7182285846123219230375af61abd Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Wed, 25 Jan 2023 21:04:06 +0100 Subject: drm/client: Test for connectors before sending hotplug event 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 Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20230125200415.14123-2-tzimmermann@suse.de --- drivers/gpu/drm/drm_client.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/gpu/drm/drm_client.c') diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c index 262ec64d4397..09ac191c202d 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) -- cgit