From: Jesse Barnes Date: Mon, 23 Feb 2009 23:36:42 +0000 (-0800) Subject: drm/i915: handle bogus VBT panel timing X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=37df96736bfe6f5fd9a141d62946e1083d73e712;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git 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 --- diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 65be30dccc77..fc28e2bbd542 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;