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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 <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230125200415.14123-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2023-01-25 21:04:06 +01:00
parent da2b1a0a40
commit c2bb3be64e
2 changed files with 5 additions and 5 deletions
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5
drivers/gpu/drm/drm_client.c
View File

@ -198,6 +198,11 @@ void drm_client_dev_hotplug(struct drm_device *dev)
if (!drm_core_check_feature(dev, DRIVER_MODESET)) if (!drm_core_check_feature(dev, DRIVER_MODESET))
return; 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); mutex_lock(&dev->clientlist_mutex);
list_for_each_entry(client, &dev->clientlist, list) { list_for_each_entry(client, &dev->clientlist, list) {
if (!client->funcs || !client->funcs->hotplug) if (!client->funcs || !client->funcs->hotplug)

5
drivers/gpu/drm/drm_fbdev_generic.c
View File

@ -389,11 +389,6 @@ static int drm_fbdev_client_hotplug(struct drm_client_dev *client)
if (dev->fb_helper) if (dev->fb_helper)
return drm_fb_helper_hotplug_event(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); drm_fb_helper_prepare(dev, fb_helper, &drm_fb_helper_generic_funcs);
ret = drm_fb_helper_init(dev, fb_helper); ret = drm_fb_helper_init(dev, fb_helper);