Apparently there are Apple laptops with magic smoke for a VBIOS, which we fail to find and use. Default to having and setting up backlight in this case.
This fixes a regression introduced by commit c675949ec58ca50d5a3ae3c757892f1560f6e896 Author: Jani Nikula <[email protected]> Date: Wed Apr 9 11:31:37 2014 +0300 drm/i915: do not setup backlight if not available according to VBT Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=77831 Reported-by: Matteo Cypriani <[email protected]> Cc: [email protected] # 3.15+ Signed-off-by: Jani Nikula <[email protected]> --- drivers/gpu/drm/i915/intel_bios.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 1ee98f121a00..827498e081df 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -315,9 +315,6 @@ parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb) const struct bdb_lfp_backlight_data *backlight_data; const struct bdb_lfp_backlight_data_entry *entry; - /* Err to enabling backlight if no backlight block. */ - dev_priv->vbt.backlight.present = true; - backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT); if (!backlight_data) return; @@ -1088,6 +1085,9 @@ init_vbt_defaults(struct drm_i915_private *dev_priv) dev_priv->vbt.crt_ddc_pin = GMBUS_PORT_VGADDC; + /* Default to having backlight */ + dev_priv->vbt.backlight.present = true; + /* LFP panel data */ dev_priv->vbt.lvds_dither = 1; dev_priv->vbt.lvds_vbt = 0; -- 1.9.1 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
