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serial: lantiq: Use platform_get_irq() to get the interrupt

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Use the preferred platform_get_irq() call to retrieve the interrupts. These
have the advantage of working with deferred probe and gets us one step
closer to removing of_irq_to_resource_table().

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211215224800.1984391-1-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Herring 2021-12-15 16:48:00 -06:00 committed by Greg Kroah-Hartman
parent 26baf4b66c
commit f087f01ca2
1 changed files with 13 additions and 15 deletions
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28
drivers/tty/serial/lantiq.c
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@ -16,8 +16,6 @@
#include <linux/ioport.h>
#include <linux/lantiq.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
@ -728,19 +726,19 @@ static struct uart_driver lqasc_reg = {
static int fetch_irq_lantiq(struct device *dev, struct ltq_uart_port *ltq_port)
{
struct uart_port *port = &ltq_port->port;
struct resource irqres[3];
int ret;
struct platform_device *pdev = to_platform_device(dev);
ret = of_irq_to_resource_table(dev->of_node, irqres, 3);
if (ret != 3) {
dev_err(dev,
"failed to get IRQs for serial port\n");
return -ENODEV;
}
ltq_port->tx_irq = irqres[0].start;
ltq_port->rx_irq = irqres[1].start;
ltq_port->err_irq = irqres[2].start;
port->irq = irqres[0].start;
ltq_port->tx_irq = platform_get_irq(pdev, 0);
if (ltq_port->tx_irq < 0)
return ltq_port->tx_irq;
ltq_port->rx_irq = platform_get_irq(pdev, 1);
if (ltq_port->rx_irq < 0)
return ltq_port->rx_irq;
ltq_port->err_irq = platform_get_irq(pdev, 2);
if (ltq_port->err_irq < 0)
return ltq_port->err_irq;
port->irq = ltq_port->tx_irq;
return 0;
}
@ -793,7 +791,7 @@ static int fetch_irq_intel(struct device *dev, struct ltq_uart_port *ltq_port)
struct uart_port *port = &ltq_port->port;
int ret;
ret = of_irq_get(dev->of_node, 0);
ret = platform_get_irq(to_platform_device(dev), 0);
if (ret < 0) {
dev_err(dev, "failed to fetch IRQ for serial port\n");
return ret;