superio/common: Fix NULL pointer dereferences
Coverity detects the dev->link_list NULL pointer dereferences while
calling report_resource_stored. Add sanity check for dev->link_list to
prevent NULL pointer dereference.
Found-by: Coverity CID 1419488
TEST=None
Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: I953a6524fff509a7833896392b25a3245c8cd705
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45627
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/device/device_util.c b/src/device/device_util.c
index 22c3db1..452a87b 100644
--- a/src/device/device_util.c
+++ b/src/device/device_util.c
@@ -519,7 +519,7 @@
end = resource_end(resource);
buf[0] = '\0';
- if (resource->flags & IORESOURCE_PCI_BRIDGE) {
+ if (dev->link_list && (resource->flags & IORESOURCE_PCI_BRIDGE)) {
snprintf(buf, sizeof(buf),
"bus %02x ", dev->link_list->secondary);
}