From 40af900c5f12ea3e4eda2688050a22dc1fee42d1 Mon Sep 17 00:00:00 2001 From: Hou Zhiqiang Date: Fri, 5 Jul 2019 17:56:36 +0800 Subject: [PATCH] PCI: mobiveil: Move the link up waiting out of mobiveil_host_init() The host initializing sequence does not depend on the PCIe link being up, so move the link up check right before the code scanning the root bus for enumeration. Signed-off-by: Hou Zhiqiang Signed-off-by: Lorenzo Pieralisi Reviewed-by: Minghuan Lian Reviewed-by: Subrahmanya Lingappa --- drivers/pci/controller/pcie-mobiveil.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c index 9e080612a97b..8f92f05c9211 100644 --- a/drivers/pci/controller/pcie-mobiveil.c +++ b/drivers/pci/controller/pcie-mobiveil.c @@ -561,15 +561,8 @@ static void mobiveil_pcie_enable_msi(struct mobiveil_pcie *pcie) static int mobiveil_host_init(struct mobiveil_pcie *pcie) { u32 value, pab_ctrl, type = 0; - int err; struct resource_entry *win; - err = mobiveil_bringup_link(pcie); - if (err) { - dev_info(&pcie->pdev->dev, "link bring-up failed\n"); - return err; - } - /* * program Bus Master Enable Bit in Command Register in PAB Config * Space @@ -635,7 +628,7 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie) /* setup MSI hardware registers */ mobiveil_pcie_enable_msi(pcie); - return err; + return 0; } static void mobiveil_mask_intx_irq(struct irq_data *data) @@ -892,6 +885,12 @@ static int mobiveil_pcie_probe(struct platform_device *pdev) bridge->map_irq = of_irq_parse_and_map_pci; bridge->swizzle_irq = pci_common_swizzle; + ret = mobiveil_bringup_link(pcie); + if (ret) { + dev_info(dev, "link bring-up failed\n"); + goto error; + } + /* setup the kernel resources for the newly added PCIe root bus */ ret = pci_scan_root_bus_bridge(bridge); if (ret) -- 2.30.2