On Mon, 4 Jul 2016 18:00:09 +0200
Alexandre Belloni <alexandre.bell...@free-electrons.com> wrote:
> mck is needed to get the PIT working. Explicitly prepare_enable it instead
> of assuming it is enabled.
>
> This solves an issue were the system is freezing when the ETM/ETB drivers
^ where
> are enabled.
>
> Reported-by: Olivier Schonken <olivier.schon...@gmail.com>
> Signed-off-by: Alexandre Belloni <alexandre.bell...@free-electrons.com>
Reviewed-by: Boris Brezillon <boris.brezil...@free-electrons.com>
> ---
> drivers/clocksource/timer-atmel-pit.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/clocksource/timer-atmel-pit.c
> b/drivers/clocksource/timer-atmel-pit.c
> index d911c5dca8f1..fcc97711cd79 100644
> --- a/drivers/clocksource/timer-atmel-pit.c
> +++ b/drivers/clocksource/timer-atmel-pit.c
> @@ -248,6 +248,9 @@ static void __init at91sam926x_pit_dt_init(struct
> device_node *node)
> if (IS_ERR(data->mck))
> panic(pr_fmt("Unable to get mck clk\n"));
>
> + if (clk_prepare_enable(data->mck))
> + panic(pr_fmt("Unable to enable mck\n"));
> +
> /* Get the interrupts property */
> data->irq = irq_of_parse_and_map(node, 0);
> if (!data->irq)
