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staging: axis-fifo: Use platform_get_irq() to get the interrupt

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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/20211224161334.31123-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lad Prabhakar 2021-12-24 16:13:34 +00:00 committed by Greg Kroah-Hartman
parent 683fade1a2
commit 790ada0e6e
1 changed files with 3 additions and 8 deletions
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11
drivers/staging/axis-fifo/axis-fifo.c
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@ -809,7 +809,6 @@ end:
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) {