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drm: prune modes when output is disconnected.

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When an output was disconnected, its mode list would remain.  If you later
plugged into a sink with no EDID (projector, etc), you'd inherit the mode
list from the old sink, which is not what you want.

taken from Fedora kernel

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2009-09-08 11:51:46 +10:00 committed by Dave Airlie
parent 1ecff1eb0b
commit 620f37811d
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/drm_crtc_helper.c
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@ -95,8 +95,7 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
if (connector->status == connector_status_disconnected) {
DRM_DEBUG_KMS("%s is disconnected\n",
drm_get_connector_name(connector));
/* TODO set EDID to NULL */
return 0;
goto prune;
}
count = (*connector_funcs->get_modes)(connector);
@ -124,6 +123,7 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
mode);
}
prune:
drm_mode_prune_invalid(dev, &connector->modes, true);
if (list_empty(&connector->modes))