redonkable/alistair23-linux
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drm: Don't try and disable an encoder that was never enabled

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Prevents code that assumes that the encoder is active when asked to be
disabled from dying a horrible death.

Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Chris Wilson 2010-12-06 11:24:07 +00:00 committed by Dave Airlie
parent ea5d552c73
commit 541cc96691
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_crtc_helper.c
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@ -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;