From 65318734645c35a1612f76b856a84b9fb995d7e3 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 14 Dec 2015 12:50:51 +0200
Subject: [PATCH] drm/i915/opregion: make VBT size limit more strict
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
The VBT in OpRegion should fit in mailbox #4.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/4bdb3f5820e3dbd1cdfa7b65cadfce4f80b880f0.1450089383.git.jani.nikula@intel.com
---
drivers/gpu/drm/i915/intel_opregion.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 859c9acbee730..1c8dfc9fca7de 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -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");
--
2.39.5