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usb: isp1760: 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(). Also use irq_get_trigger_type to get the
IRQ trigger flags.

Reviewed-by: Rui Miguel Silva <rui.silva@linaro.org>
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/20211220010411.12075-5-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 01:04:09 +00:00 committed by Greg Kroah-Hartman
parent 74b39dfabd
commit d057ac484a
1 changed files with 7 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/usb/isp1760/isp1760-if.c
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@ -13,6 +13,7 @@
#include <linux/usb.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
@ -191,17 +192,15 @@ static int isp1760_plat_probe(struct platform_device *pdev)
unsigned long irqflags;
unsigned int devflags = 0;
struct resource *mem_res;
struct resource *irq_res;
int irq;
int ret;
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!irq_res) {
pr_warn("isp1760: IRQ resource not available\n");
return -ENODEV;
}
irqflags = irq_res->flags & IRQF_TRIGGER_MASK;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
irqflags = irq_get_trigger_type(irq);
if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) {
struct device_node *dp = pdev->dev.of_node;
@ -239,8 +238,7 @@ static int isp1760_plat_probe(struct platform_device *pdev)
return -ENXIO;
}
ret = isp1760_register(mem_res, irq_res->start, irqflags, &pdev->dev,
devflags);
ret = isp1760_register(mem_res, irq, irqflags, &pdev->dev, devflags);
if (ret < 0)
return ret;