diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c
index ada2e6926f0099dfe55a7acf1980cc9b1b0b95ef..4418f9070ed171e9d679d1e6868cbbf10396d4e9 100644
--- a/arch/sh/drivers/pci/pcie-sh7786.c
+++ b/arch/sh/drivers/pci/pcie-sh7786.c
@@ -571,6 +571,8 @@ static int __init sh7786_pcie_init(void)
 		async_schedule(sh7786_pcie_hwops->port_init_hw, port);
 	}
 
+	async_synchronize_full();
+
 	return 0;
 }
 arch_initcall(sh7786_pcie_init);