--- zzzz-none-000/linux-4.4.60/drivers/pci/host/pci-exynos.c	2017-04-08 07:53:53.000000000 +0000
+++ jet-2400-727/linux-4.4.60/drivers/pci/host/pci-exynos.c	2021-03-17 14:36:41.000000000 +0000
@@ -318,7 +318,6 @@
 {
 	struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
 	u32 val;
-	unsigned int retries;
 
 	if (dw_pcie_link_up(pp)) {
 		dev_err(pp->dev, "Link already up\n");
@@ -357,13 +356,8 @@
 			  PCIE_APP_LTSSM_ENABLE);
 
 	/* check if the link is up or not */
-	for (retries = 0; retries < 10; retries++) {
-		if (dw_pcie_link_up(pp)) {
-			dev_info(pp->dev, "Link up\n");
-			return 0;
-		}
-		mdelay(100);
-	}
+	if (!dw_pcie_wait_for_link(pp))
+		return 0;
 
 	while (exynos_phy_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED) == 0) {
 		val = exynos_blk_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED);
@@ -372,8 +366,7 @@
 	/* power off phy */
 	exynos_pcie_power_off_phy(pp);
 
-	dev_err(pp->dev, "PCIe Link Fail\n");
-	return -EINVAL;
+	return -ETIMEDOUT;
 }
 
 static void exynos_pcie_clear_irq_pulse(struct pcie_port *pp)