diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c
index c26ffb4..f5a964a 100644
--- a/src/northbridge/intel/i945/gma.c
+++ b/src/northbridge/intel/i945/gma.c
@@ -755,25 +755,11 @@
 		pci_write_config8(dev, 0xf4, 0xff);
 }
 
-const struct i915_gpu_controller_info *
-intel_gma_get_controller_info(void)
+static void gma_generate_ssdt(struct device *device)
 {
-	struct device *dev = pcidev_on_root(0x2, 0);
-	if (!dev)
-		return NULL;
-	struct northbridge_intel_i945_config *chip = dev->chip_info;
-	if (!chip)
-		return NULL;
-	return &chip->gfx;
-}
+	const struct northbridge_intel_i945_config *chip = device->chip_info;
 
-static void gma_ssdt(struct device *device)
-{
-	const struct i915_gpu_controller_info *gfx = intel_gma_get_controller_info();
-	if (!gfx)
-		return;
-
-	drivers_intel_gma_displays_ssdt_generate(gfx);
+	drivers_intel_gma_displays_ssdt_generate(&chip->gfx);
 }
 
 static void gma_func0_read_resources(struct device *dev)
@@ -829,7 +815,7 @@
 	.set_resources		= pci_dev_set_resources,
 	.enable_resources	= pci_dev_enable_resources,
 	.init			= gma_func0_init,
-	.acpi_fill_ssdt		= gma_ssdt,
+	.acpi_fill_ssdt		= gma_generate_ssdt,
 	.scan_bus		= 0,
 	.enable			= 0,
 	.disable		= gma_func0_disable,