usb: host: fotg210: Use platform_get_irq() to get the interrupt

platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypasses the hierarchical setup and messes up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq().

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211220010411.12075-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index b590995a6b3e932ebe263a1465be6fa62648259e..7af17c8e069b356dc4dd4865be90b83d6dfb5e5b 100644 (file)
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -5576,14 +5576,9 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
 
        pdev->dev.power.power_state = PMSG_ON;
 
-       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-       if (!res) {
-               dev_err(dev, "Found HC with no IRQ. Check %s setup!\n",
-                               dev_name(dev));
-               return -ENODEV;
-       }
-
-       irq = res->start;
+       irq = platform_get_irq(pdev, 0);
+       if (irq < 0)
+               return irq;
 
        hcd = usb_create_hcd(&fotg210_fotg210_hc_driver, dev,
                        dev_name(dev));