diff mbox series

[09/10] serial: bcm63xx: Use platform_get_irq() to get the interrupt

Message ID 20211224142917.6966-10-prabhakar.mahadev-lad.rj@bp.renesas.com
State New
Headers show
Series serial: Use platform_get_irq*() variants to fetch IRQ's | expand

Commit Message

Prabhakar Mahadev Lad Dec. 24, 2021, 2:29 p.m. UTC 
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>
---
 drivers/tty/serial/bcm63xx_uart.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

Florian Fainelli Dec. 24, 2021, 5:05 p.m. UTC | #1 
On 12/24/2021 06:29, Lad Prabhakar wrote:
> 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>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index 5fb0e84f7fd1..6471a54b616b 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -804,7 +804,7 @@  static struct uart_driver bcm_uart_driver = {
  */
 static int bcm_uart_probe(struct platform_device *pdev)
 {
-	struct resource *res_mem, *res_irq;
+	struct resource *res_mem;
 	struct uart_port *port;
 	struct clk *clk;
 	int ret;
@@ -833,9 +833,10 @@  static int bcm_uart_probe(struct platform_device *pdev)
 	if (IS_ERR(port->membase))
 		return PTR_ERR(port->membase);
 
-	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res_irq)
-		return -ENODEV;
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
+		return ret;
+	port->irq = ret;
 
 	clk = clk_get(&pdev->dev, "refclk");
 	if (IS_ERR(clk) && pdev->dev.of_node)
@@ -845,7 +846,6 @@  static int bcm_uart_probe(struct platform_device *pdev)
 		return -ENODEV;
 
 	port->iotype = UPIO_MEM;
-	port->irq = res_irq->start;
 	port->ops = &bcm_uart_ops;
 	port->flags = UPF_BOOT_AUTOCONF;
 	port->dev = &pdev->dev;