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usb: cdns3: Use platform_get_irq_byname() to get the interrupt 

platform_get_resource_byname(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_byname().

Reviewed-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211220010411.12075-6-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lad Prabhakar 2021-12-20 01:04:10 +00:00 committed by Greg Kroah-Hartman
parent d057ac484a
commit 78e17d6999
1 changed files with 8 additions and 6 deletions
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14
drivers/usb/cdns3/cdns3-plat.c
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@ -13,6 +13,7 @@
*/
#include <linux/module.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
@ -65,13 +66,14 @@ static int cdns3_plat_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, cdns);
res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "host");
if (!res) {
dev_err(dev, "missing host IRQ\n");
return -ENODEV;
}
ret = platform_get_irq_byname(pdev, "host");
if (ret < 0)
return ret;
cdns->xhci_res[0] = *res;
cdns->xhci_res[0].start = ret;
cdns->xhci_res[0].end = ret;
cdns->xhci_res[0].flags = IORESOURCE_IRQ | irq_get_trigger_type(ret);
cdns->xhci_res[0].name = "host";
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "xhci");
if (!res) {