[XS] Change in coreboot[main]: drivers/intel/gma/acpi: Limit OpRegion size

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/81295?usp=email )

Change subject: drivers/intel/gma/acpi: Limit OpRegion size
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drivers/intel/gma/acpi: Limit OpRegion size

Limit the ACPI OpRegion to cover only MBOX3. This seems to fix
BSOD errors seen on Windows 10/11 as reported at [1].

1: https://ticket.coreboot.org/issues/327

Change-Id: Ia2affa799e5cd84c0a03330e0f78919755f0e8ac
Signed-off-by: Patrick Rudolph 
---
M src/drivers/intel/gma/acpi/configure_brightness_levels.asl
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/95/81295/1

diff --git a/src/drivers/intel/gma/acpi/configure_brightness_levels.asl b/src/drivers/intel/gma/acpi/configure_brightness_levels.asl
index 3a097e3..888c241 100644
--- a/src/drivers/intel/gma/acpi/configure_brightness_levels.asl
+++ b/src/drivers/intel/gma/acpi/configure_brightness_levels.asl
@@ -11,7 +11,7 @@
    {
    	Name (_ADR, 0)

-		OperationRegion (OPRG, SystemMemory, ASLS, 0x2000)
+		OperationRegion (OPRG, SystemMemory, ASLS, 0x400)
    	Field (OPRG, DWordAcc, NoLock, Preserve)
    	{
    		// OpRegion Header