diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index cab4d8b1535d..6f1cc7f1b202 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -209,7 +209,14 @@ out:
 
 int amd_smn_read(u16 node, u32 address, u32 *value)
 {
-	return __amd_smn_rw(node, address, value, false);
+	int err = __amd_smn_rw(node, address, value, false);
+
+	if (PCI_POSSIBLE_ERROR(*value)) {
+		err = -ENODEV;
+		*value = 0;
+	}
+
+	return err;
 }
 EXPORT_SYMBOL_GPL(amd_smn_read);