[coreboot-gerrit] Change in coreboot[master]: nb/intel/gm45: Don't run graphics init on s3 resume

[Arthur Heymans (Code Review)]

Arthur Heymans has submitted this change. ( https://review.coreboot.org/c/coreboot/+/35995 )

Change subject: nb/intel/gm45: Don't run graphics init on s3 resume
......................................................................

nb/intel/gm45: Don't run graphics init on s3 resume

This assumes ACPI aware OS also have a driver for this particular
hardware, which is the case for at least Linux. This saves ~60ms on S3
resume.

Change-Id: I2dcd399fee8e2d1cd1b70e60e1669a49c7aa8cb4
Signed-off-by: Arthur Heymans 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35995
Tested-by: build bot (Jenkins) 
Reviewed-by: Nico Huber 
---
M src/northbridge/intel/gm45/gma.c
1 file changed, 1 insertion(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, approved

diff --git a/src/northbridge/intel/gm45/gma.c b/src/northbridge/intel/gm45/gma.c
index a2de7f0..1e6da69 100644
--- a/src/northbridge/intel/gm45/gma.c
+++ b/src/northbridge/intel/gm45/gma.c
@@ -205,7 +205,7 @@
    /* Post VBIOS init */
    gma_pm_init_post_vbios(dev, edid_lvds.ascii_string);

-	if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) {
+	if (CONFIG(MAINBOARD_USE_LIBGFXINIT) && !acpi_is_wakeup_s3()) {
    	int vga_disable = (pci_read_config16(dev, D0F0_GGC) & 2) >> 1;
    	if (vga_disable) {
    		printk(BIOS_INFO,