It is not recommened to use platform_get_resource(pdev, IORESOURCE_IRQ) for requesting IRQ's resources any more, as they can be not ready yet in case of DT-booting.
platform_get_irq() instead is a recommended way for getting IRQ even if it was not retrieved earlier. It also makes code simpler because we're getting "int" value right away and no conversion from resource to int is required. Signed-off-by: Alexey Brodkin <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Alan Cox <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Andy Shevchenko <[email protected]> --- Changes in v2: * Suppress error message if platform_get_irq() returns -EPROBE_DEFER --- drivers/tty/serial/8250/8250_dw.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index e601162..cda76e8 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -384,18 +384,24 @@ static int dw8250_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); + int irq = platform_get_irq(pdev, 0); struct dw8250_data *data; int err; - if (!regs || !irq) { - dev_err(&pdev->dev, "no registers/irq defined\n"); + if (!regs) { + dev_err(&pdev->dev, "no registers defined\n"); return -EINVAL; } + if (irq < 0) { + if (irq != -EPROBE_DEFER) + dev_err(&pdev->dev, "cannot get irq\n"); + return irq; + } + spin_lock_init(&uart.port.lock); uart.port.mapbase = regs->start; - uart.port.irq = irq->start; + uart.port.irq = irq; uart.port.handle_irq = dw8250_handle_irq; uart.port.pm = dw8250_do_pm; uart.port.type = PORT_8250; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
