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drm/i915: LVDS fallback to fixed-mode if EDID not present 

Use the recorded panel fixed-mode to populate the get_modes() request in
the absence of an EDID.

Fixes regression from
commit 9cd300e038
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Fri Oct 19 14:51:52 2012 +0300

    drm/i915: Move cached EDID to intel_connector

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Drop the retval-changing hunk, as suggested by Jani in his
review and acked by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2012-11-21 16:14:04 +00:00 committed by Daniel Vetter
parent 4b745b1e54
commit 2aa4f09917
1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/i915/intel_lvds.c
View File

@ -460,13 +460,8 @@ static int intel_lvds_get_modes(struct drm_connector *connector)
struct drm_display_mode *mode;
/* use cached edid if we have one */
if (lvds_connector->base.edid) {
/* invalid edid */
if (IS_ERR(lvds_connector->base.edid))
return 0;
if (!IS_ERR_OR_NULL(lvds_connector->base.edid))
return drm_add_edid_modes(connector, lvds_connector->base.edid);
}
mode = drm_mode_duplicate(dev, lvds_connector->base.panel.fixed_mode);
if (mode == NULL)