1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c
index cbaa5c4397e3..ceec147baec3 100644
--- a/drivers/pci/host/pci-rcar-gen2.c
+++ b/drivers/pci/host/pci-rcar-gen2.c
@@ -17,6 +17,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 
 /* AHB-PCI Bridge PCI communication registers */
@@ -77,6 +78,7 @@
 #define RCAR_PCI_NR_CONTROLLERS         3
 
 struct rcar_pci_priv {
+        struct device *dev;
         void __iomem *reg;
         struct resource io_res;
         struct resource mem_res;
@@ -169,8 +171,11 @@ static int __init rcar_pci_setup(int nr, struct pci_sys_data *sys)
         void __iomem *reg = priv->reg;
         u32 val;
 
+        pm_runtime_enable(priv->dev);
+        pm_runtime_get_sync(priv->dev);
+
         val = ioread32(reg + RCAR_PCI_UNIT_REV_REG);
-        pr_info("PCI: bus%u revision %x\n", sys->busnr, val);
+        dev_info(priv->dev, "PCI: bus%u revision %x\n", sys->busnr, val);
 
         /* Disable Direct Power Down State and assert reset */
         val = ioread32(reg + RCAR_USBCTR_REG) & ~RCAR_USBCTR_DIRPD;
@@ -276,8 +281,8 @@ static int __init rcar_pci_probe(struct platform_device *pdev)
 
         cfg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         reg = devm_ioremap_resource(&pdev->dev, cfg_res);
-        if (!reg)
-                return -ENODEV;
+        if (IS_ERR(reg))
+                return PTR_ERR(reg);
 
         mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
         if (!mem_res || !mem_res->start)
@@ -301,6 +306,7 @@ static int __init rcar_pci_probe(struct platform_device *pdev)
 
         priv->irq = platform_get_irq(pdev, 0);
         priv->reg = reg;
+        priv->dev = &pdev->dev;
 
         return rcar_pci_add_controller(priv);
 }