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usb: musb: dsps: Use platform_get_irq_byname() to get the interrupt

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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().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211220010411.12075-7-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 01:04:11 +00:00 committed by Greg Kroah-Hartman
parent 78e17d6999
commit ce1d37cb76
1 changed files with 9 additions and 6 deletions
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15
drivers/usb/musb/musb_dsps.c
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@ -15,6 +15,7 @@
*/
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
@ -739,12 +740,14 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue,
}
resources[0] = *res;
res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc");
if (!res) {
dev_err(dev, "failed to get irq.\n");
return -EINVAL;
}
resources[1] = *res;
ret = platform_get_irq_byname(parent, "mc");
if (ret < 0)
return ret;
resources[1].start = ret;
resources[1].end = ret;
resources[1].flags = IORESOURCE_IRQ | irq_get_trigger_type(ret);
resources[1].name = "mc";
/* allocate the child platform device */
musb = platform_device_alloc("musb-hdrc",