Samuel Mendoza-Jonas <s...@mendozajonas.com> writes:
> Update the hvc driver to use the OPAL irqchip if made available by the
> running firmware. If it is not present, the driver falls back to the
> existing OPAL event number.
>
> Signed-off-by: Samuel Mendoza-Jonas <s...@mendozajonas.com>
> Cc: <sta...@vger.kernel.org> # 4.1.x-
> ---
> v2: Always try irq_of_parse_and_map before falling back
LGTM.
Acked-by: Michael Ellerman <m...@ellerman.id.au>
cheers
> diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
> index b7cd0ae..5107993 100644
> --- a/drivers/tty/hvc/hvc_opal.c
> +++ b/drivers/tty/hvc/hvc_opal.c
> @@ -214,7 +214,13 @@ static int hvc_opal_probe(struct platform_device *dev)
> dev->dev.of_node->full_name,
> boot ? " (boot console)" : "");
>
> - irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT));
> + irq = irq_of_parse_and_map(dev->dev.of_node, 0);
> + if (!irq) {
> + pr_info("hvc%d: No interrupts property, using OPAL event\n",
> + termno);
> + irq = opal_event_request(ilog2(OPAL_EVENT_CONSOLE_INPUT));
> + }
> +
> if (!irq) {
> pr_err("hvc_opal: Unable to map interrupt for device %s\n",
> dev->dev.of_node->full_name);
> --
> 2.9.0
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