From mboxrd@z Thu Jan 1 00:00:00 1970 From: alexandre.belloni@free-electrons.com (Alexandre Belloni) Date: Mon, 4 Jul 2016 18:00:09 +0200 Subject: [PATCH] clocksource: timer-atmel-pit: enable mck Message-ID: <1467648009-24269-1-git-send-email-alexandre.belloni@free-electrons.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 are enabled. Reported-by: Olivier Schonken Signed-off-by: Alexandre Belloni --- 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) -- 2.8.1