From a09e100684e6652783eb16d7d49204c463760ee4 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Mon, 23 Feb 2009 15:36:42 -0800 Subject: [PATCH] drm/i915: handle bogus VBT panel timing We've seen cases in the wild where the VBT sync data is wrong, so add some code to fix it up in that case, taking care to make sure that the total is greater than the sync end. Signed-off-by: Jesse Barnes Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/intel_bios.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 65be30dccc776..fc28e2bbd5427 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -111,6 +111,12 @@ parse_panel_data(struct drm_i915_private *dev_priv, struct bdb_header *bdb) panel_fixed_mode->clock = dvo_timing->clock * 10; panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; + /* Some VBTs have bogus h/vtotal values */ + if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) + panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; + if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) + panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; + drm_mode_set_name(panel_fixed_mode); dev_priv->vbt_mode = panel_fixed_mode; -- 2.39.5