From 541cc966915b6756e54c20eebe60ae957afdb537 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 6 Dec 2010 11:24:07 +0000 Subject: [PATCH] drm: Don't try and disable an encoder that was never enabled Prevents code that assumes that the encoder is active when asked to be disabled from dying a horrible death. Reported-by: Daniel Vetter Signed-off-by: Chris Wilson Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_crtc_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 7ca59359fee2..bede10a03407 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -241,7 +241,7 @@ void drm_helper_disable_unused_functions(struct drm_device *dev) } list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { - if (!drm_helper_encoder_in_use(encoder)) { + if (encoder->crtc && !drm_helper_encoder_in_use(encoder)) { drm_encoder_disable(encoder); /* disconnector encoder from any connector */ encoder->crtc = NULL; -- GitLab