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Commit 65318734 authored by Jani Nikula's avatar Jani Nikula
Browse files

drm/i915/opregion: make VBT size limit more strict 



The VBT in OpRegion should fit in mailbox #4.

Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/4bdb3f5820e3dbd1cdfa7b65cadfce4f80b880f0.1450089383.git.jani.nikula@intel.com
parent f0067a31

drivers/gpu/drm/i915/intel_opregion.c

+1 −1
Original line number Diff line number Diff line
@@ -988,7 +988,7 @@ int intel_opregion_setup(struct drm_device *dev) 


	if (!dmi_check_system(intel_no_opregion_vbt)) {

		void *vbt = base + OPREGION_VBT_OFFSET;

		u32 vbt_size = OPREGION_SIZE - OPREGION_VBT_OFFSET;

		u32 vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET;



		if (intel_bios_is_valid_vbt(vbt, vbt_size)) {

			DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion\n");