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serial: 8250_ingenic: Switch to use platform_get_irq()

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platform_get_irq() provides an established error code and error message.
Also, it's better to use dedicated API to retrieve Linux IRQ resource.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200618123320.88612-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2020-06-18 15:33:20 +03:00 committed by Greg Kroah-Hartman
parent e914072cac
commit 451a73c680
1 changed files with 10 additions and 6 deletions
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16
drivers/tty/serial/8250/8250_ingenic.c
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@ -207,12 +207,11 @@ static unsigned int ingenic_uart_serial_in(struct uart_port *p, int offset)
static int ingenic_uart_probe(struct platform_device *pdev)
{
struct uart_8250_port uart = {};
struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct resource *irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
struct ingenic_uart_data *data;
const struct ingenic_uart_config *cdata;
const struct of_device_id *match;
int err, line;
struct resource *regs;
int irq, err, line;
match = of_match_device(of_match, &pdev->dev);
if (!match) {
@ -221,8 +220,13 @@ static int ingenic_uart_probe(struct platform_device *pdev)
}
cdata = match->data;
if (!regs || !irq) {
dev_err(&pdev->dev, "no registers/irq defined\n");
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!regs) {
dev_err(&pdev->dev, "no registers defined\n");
return -EINVAL;
}
@ -238,7 +242,7 @@ static int ingenic_uart_probe(struct platform_device *pdev)
uart.port.regshift = 2;
uart.port.serial_out = ingenic_uart_serial_out;
uart.port.serial_in = ingenic_uart_serial_in;
uart.port.irq = irq->start;
uart.port.irq = irq;
uart.port.dev = &pdev->dev;
uart.port.fifosize = cdata->fifosize;
uart.tx_loadsz = cdata->tx_loadsz;