From: Noralf Trønnes Date: Wed, 11 Jul 2018 15:56:32 +0000 (+0200) Subject: drm/client: Fix: drm_client_new: Don't require DRM to be registered X-Git-Tag: v4.19-rc1~138^2~24^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ae61f61fa802c829fa8d505587f9b337e63ea586;p=thirdparty%2Fkernel%2Flinux.git drm/client: Fix: drm_client_new: Don't require DRM to be registered Commit 894a677f4b3e ("drm/cma-helper: Use the generic fbdev emulation") broke almost all drivers that use the CMA helper. The reason is that drm_client_new() requires that the DRM device has been registered, but the drivers register fbdev before registering DRM. Remove the requirement that DRM should be registered when creating a new client. Fixes: c76f0f7cb546 ("drm: Begin an API for in-kernel clients") Cc: Maxime Ripard Cc: Icenowy Zheng Cc: Chen-Yu Tsai Cc: Daniel Vetter Signed-off-by: Noralf Trønnes Tested-by: Icenowy Zheng Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20180711155632.37437-1-noralf@tronnes.org --- diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c index 4039a4d103a83..9b142f58d489f 100644 --- a/drivers/gpu/drm/drm_client.c +++ b/drivers/gpu/drm/drm_client.c @@ -78,7 +78,6 @@ EXPORT_SYMBOL(drm_client_close); int drm_client_new(struct drm_device *dev, struct drm_client_dev *client, const char *name, const struct drm_client_funcs *funcs) { - bool registered; int ret; if (!drm_core_check_feature(dev, DRIVER_MODESET) || @@ -97,21 +96,13 @@ int drm_client_new(struct drm_device *dev, struct drm_client_dev *client, goto err_put_module; mutex_lock(&dev->clientlist_mutex); - registered = dev->registered; - if (registered) - list_add(&client->list, &dev->clientlist); + list_add(&client->list, &dev->clientlist); mutex_unlock(&dev->clientlist_mutex); - if (!registered) { - ret = -ENODEV; - goto err_close; - } drm_dev_get(dev); return 0; -err_close: - drm_client_close(client); err_put_module: if (funcs) module_put(funcs->owner);