diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_opregion.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_opregion.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index 5b9fc790d300..859c9acbee73 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -986,8 +986,15 @@ int intel_opregion_setup(struct drm_device *dev) if (mboxes & MBOX_ASLE_EXT) DRM_DEBUG_DRIVER("ASLE extension supported\n"); - if (!dmi_check_system(intel_no_opregion_vbt)) - opregion->vbt = base + OPREGION_VBT_OFFSET; + if (!dmi_check_system(intel_no_opregion_vbt)) { + void *vbt = base + OPREGION_VBT_OFFSET; + u32 vbt_size = OPREGION_SIZE - OPREGION_VBT_OFFSET; + + if (intel_bios_is_valid_vbt(vbt, vbt_size)) { + DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion\n"); + opregion->vbt = vbt; + } + } return 0; |