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authorLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>2021-12-24 14:29:11 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-12-30 13:26:49 +0100
commit6050efac12c6bd1cdb75cf217c37cf3ee9f408c9 (patch)
tree216246c4bb35372dbbc6ee9d2c255ef366e68e28 /drivers/tty
parent5b68061983471470d4109bac776145245f06bc09 (diff)
serial: pxa: 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: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20211224142917.6966-6-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/pxa.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index 41319ef96fa6..30b099746a75 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -842,14 +842,18 @@ static int serial_pxa_probe_dt(struct platform_device *pdev,
static int serial_pxa_probe(struct platform_device *dev)
{
struct uart_pxa_port *sport;
- struct resource *mmres, *irqres;
+ struct resource *mmres;
int ret;
+ int irq;
mmres = platform_get_resource(dev, IORESOURCE_MEM, 0);
- irqres = platform_get_resource(dev, IORESOURCE_IRQ, 0);
- if (!mmres || !irqres)
+ if (!mmres)
return -ENODEV;
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0)
+ return irq;
+
sport = kzalloc(sizeof(struct uart_pxa_port), GFP_KERNEL);
if (!sport)
return -ENOMEM;
@@ -869,7 +873,7 @@ static int serial_pxa_probe(struct platform_device *dev)
sport->port.type = PORT_PXA;
sport->port.iotype = UPIO_MEM;
sport->port.mapbase = mmres->start;
- sport->port.irq = irqres->start;
+ sport->port.irq = irq;
sport->port.fifosize = 64;
sport->port.ops = &serial_pxa_pops;
sport->port.dev = &dev->dev;