usb: dwc3: host: extract dwc3_host_get_irq()

Cleanup only, no functional changes.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index f6533c6..8c2679e 100644 (file)
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -19,6 +19,39 @@
 
 #include "core.h"
 
+static int dwc3_host_get_irq(struct dwc3 *dwc)
+{
+       struct platform_device  *dwc3_pdev = to_platform_device(dwc->dev);
+       int irq;
+
+       irq = platform_get_irq_byname(dwc3_pdev, "host");
+       if (irq > 0)
+               goto out;
+
+       if (irq == -EPROBE_DEFER)
+               goto out;
+
+       irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3");
+       if (irq > 0)
+               goto out;
+
+       if (irq == -EPROBE_DEFER)
+               goto out;
+
+       irq = platform_get_irq(dwc3_pdev, 0);
+       if (irq > 0)
+               goto out;
+
+       if (irq != -EPROBE_DEFER)
+               dev_err(dwc->dev, "missing host IRQ\n");
+
+       if (!irq)
+               irq = -EINVAL;
+
+out:
+       return irq;
+}
+
 int dwc3_host_init(struct dwc3 *dwc)
 {
        struct property_entry   props[2];
@@ -27,39 +60,18 @@ int dwc3_host_init(struct dwc3 *dwc)
        struct resource         *res;
        struct platform_device  *dwc3_pdev = to_platform_device(dwc->dev);
 
-       irq = platform_get_irq_byname(dwc3_pdev, "host");
-       if (irq == -EPROBE_DEFER)
+       irq = dwc3_host_get_irq(dwc);
+       if (irq < 0)
                return irq;
 
-       if (irq <= 0) {
-               irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3");
-               if (irq == -EPROBE_DEFER)
-                       return irq;
-
-               if (irq <= 0) {
-                       irq = platform_get_irq(dwc3_pdev, 0);
-                       if (irq <= 0) {
-                               if (irq != -EPROBE_DEFER) {
-                                       dev_err(dwc->dev,
-                                               "missing host IRQ\n");
-                               }
-                               if (!irq)
-                                       irq = -EINVAL;
-                               return irq;
-                       } else {
-                               res = platform_get_resource(dwc3_pdev,
-                                                           IORESOURCE_IRQ, 0);
-                       }
-               } else {
-                       res = platform_get_resource_byname(dwc3_pdev,
-                                                          IORESOURCE_IRQ,
-                                                          "dwc_usb3");
-               }
-
-       } else {
+       res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, "host");
+       if (!res)
                res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ,
-                                                  "host");
-       }
+                               "dwc_usb3");
+       if (!res)
+               res = platform_get_resource(dwc3_pdev, IORESOURCE_IRQ, 0);
+       if (!res)
+               return -ENOMEM;
 
        dwc->xhci_resources[1].start = irq;
        dwc->xhci_resources[1].end = irq;