platform: goldfish: pipe: 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().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220309202327.16627-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
index b67539f9848c27c45d30394e018c71249fb80326..7737d56191d7cca84471fa1c0202c01acbed7ac0 100644 (file)
--- a/drivers/platform/goldfish/goldfish_pipe.c
+++ b/drivers/platform/goldfish/goldfish_pipe.c
@@ -896,11 +896,9 @@ static int goldfish_pipe_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
-       r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-       if (!r)
-               return -EINVAL;
-
-       dev->irq = r->start;
+       dev->irq = platform_get_irq(pdev, 0);
+       if (dev->irq < 0)
+               return dev->irq;
 
        /*
         * Exchange the versions with the host device