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drm/i915/bios: Assume panel_type==0 if the VBT has bogus data

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Just assume panel_type==0 always if the VBT gives us bogus data.
We actually already do this everywhere else except in
parse_panel_options() since we just leave i915->vbt.panel_type
zeroed. This also seems to be what Windows does.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504150440.13748-6-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2022-05-04 18:04:36 +03:00
parent 9adf7d4186
commit 4d1b21605d
1 changed files with 6 additions and 5 deletions
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11
drivers/gpu/drm/i915/display/intel_bios.c
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@ -618,13 +618,14 @@ parse_panel_options(struct drm_i915_private *i915)
} else {
if (lvds_options->panel_type > 0xf) {
drm_dbg_kms(&i915->drm,
"Invalid VBT panel type 0x%x\n",
"Invalid VBT panel type 0x%x, assuming 0\n",
lvds_options->panel_type);
return;
panel_type = 0;
} else {
panel_type = lvds_options->panel_type;
drm_dbg_kms(&i915->drm, "Panel type: %d (VBT)\n",
panel_type);
}
panel_type = lvds_options->panel_type;
drm_dbg_kms(&i915->drm, "Panel type: %d (VBT)\n",
panel_type);
}
i915->vbt.panel_type = panel_type;