diff --git a/sys/dev/sdhci/sdhci_acpi.c b/sys/dev/sdhci/sdhci_acpi.c
--- a/sys/dev/sdhci/sdhci_acpi.c
+++ b/sys/dev/sdhci/sdhci_acpi.c
@@ -420,6 +420,7 @@
 	/* Bus interface */
 	DEVMETHOD(bus_read_ivar,	sdhci_generic_read_ivar),
 	DEVMETHOD(bus_write_ivar,	sdhci_generic_write_ivar),
+	DEVMETHOD(bus_add_child,	bus_generic_add_child),
 
 	/* mmcbr_if */
 	DEVMETHOD(mmcbr_update_ios,	sdhci_generic_update_ios),