usb: dwc3: omap: improve error handling of dwc3_omap_probe

Improved the error handling of dwc3_omap_probe so that on error
conditions dwc3_omap is left in the original state.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 34638b9..f8f76e6 100644 (file)
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -347,7 +347,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
        ret = pm_runtime_get_sync(dev);
        if (ret < 0) {
                dev_err(dev, "get_sync failed with err %d\n", ret);
-               return ret;
+               goto err0;
        }
 
        reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
@@ -376,7 +376,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
        if (ret) {
                dev_err(dev, "failed to request IRQ #%d --> %d\n",
                                omap->irq, ret);
-               return ret;
+               goto err1;
        }
 
        dwc3_omap_enable_irqs(omap);
@@ -384,10 +384,21 @@ static int dwc3_omap_probe(struct platform_device *pdev)
        ret = of_platform_populate(node, NULL, NULL, dev);
        if (ret) {
                dev_err(&pdev->dev, "failed to create dwc3 core\n");
-               return ret;
+               goto err2;
        }
 
        return 0;
+
+err2:
+       dwc3_omap_disable_irqs(omap);
+
+err1:
+       pm_runtime_put_sync(dev);
+
+err0:
+       pm_runtime_disable(dev);
+
+       return ret;
 }
 
 static int dwc3_omap_remove(struct platform_device *pdev)