Commit 790ada0e authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Greg Kroah-Hartman
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staging: axis-fifo: 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: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211224161334.31123-4-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 683fade1

drivers/staging/axis-fifo/axis-fifo.c

+3 −8
Original line number Diff line number Diff line
@@ -809,7 +809,6 @@ static int axis_fifo_parse_dt(struct axis_fifo *fifo) 


static int axis_fifo_probe(struct platform_device *pdev)

{

	struct resource *r_irq; /* interrupt resources */

	struct resource *r_mem; /* IO mem resources */

	struct device *dev = &pdev->dev; /* OS device (from device tree) */

	struct axis_fifo *fifo = NULL;
@@ -882,16 +881,12 @@ static int axis_fifo_probe(struct platform_device *pdev) 
	 */



	/* get IRQ resource */

	r_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (!r_irq) {

		dev_err(fifo->dt_device, "no IRQ found for 0x%pa\n",

			&r_mem->start);

		rc = -EIO;

	rc = platform_get_irq(pdev, 0);

	if (rc < 0)

		goto err_initial;

	}



	/* request IRQ */

	fifo->irq = r_irq->start;

	fifo->irq = rc;

	rc = devm_request_irq(fifo->dt_device, fifo->irq, &axis_fifo_irq, 0,

			      DRIVER_NAME, fifo);

	if (rc) {