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serial: 8250_omap: 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/20200618122024.87170-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2020-06-18 15:20:24 +03:00 committed by Greg Kroah-Hartman
parent 2a1dbd259e
commit 9167cc78bd
1 changed files with 10 additions and 6 deletions
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16
drivers/tty/serial/8250/8250_omap.c
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@ -1209,17 +1209,21 @@ MODULE_DEVICE_TABLE(of, omap8250_dt_ids);
static int omap8250_probe(struct platform_device *pdev)
{
struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct resource *irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
struct device_node *np = pdev->dev.of_node;
struct omap8250_priv *priv;
const struct omap8250_platdata *pdata;
struct uart_8250_port up;
int ret;
struct resource *regs;
void __iomem *membase;
int irq, ret;
if (!regs || !irq) {
dev_err(&pdev->dev, "missing registers or irq\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, "missing registers\n");
return -EINVAL;
}
@ -1236,7 +1240,7 @@ static int omap8250_probe(struct platform_device *pdev)
up.port.dev = &pdev->dev;
up.port.mapbase = regs->start;
up.port.membase = membase;
up.port.irq = irq->start;
up.port.irq = irq;
/*
* It claims to be 16C750 compatible however it is a little different.
* It has EFR and has no FCR7_64byte bit. The AFE (which it claims to