[coreboot-gerrit] [XS] Change in coreboot[main]: soc/intel/common/lpc: Skip setting resources for disabled devices

[Matt DeVillier (Code Review)]

Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/80646?usp=email )

Change subject: soc/intel/common/lpc: Skip setting resources for disabled devices
......................................................................

soc/intel/common/lpc: Skip setting resources for disabled devices

If a downstream LPC device (eg, SIO function) is disabled, we shouldn't
attempt to open PMIO windows for it, as those functions often have
unset IO bases (which default to 0), resulting in false errors like:
[ERROR] LPC IO decode base 0!

TEST=build/boot purism/librem_cnl (Mini v2), verify no LPC IO errors
in cbmem log for disabled SIO functions.

Change-Id: I92c79fc01be21466976f3056242f6d1824878eab
Signed-off-by: Matt DeVillier 
---
M src/soc/intel/common/block/lpc/lpc.c
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/80646/1

diff --git a/src/soc/intel/common/block/lpc/lpc.c b/src/soc/intel/common/block/lpc/lpc.c
index dbd982b..b27e09e9 100644
--- a/src/soc/intel/common/block/lpc/lpc.c
+++ b/src/soc/intel/common/block/lpc/lpc.c
@@ -87,6 +87,9 @@
 {
    struct resource *res;

+	if (!dev->enabled)
+		return;
+
    for (res = dev->resource_list; res; res = res->next) {
    	if (res->flags & IORESOURCE_IO)
    		lpc_open_pmio_window(res->base, res->size);