Commit eb811c73 authored Jul 27, 2015 by Ezequiel Garcia Committed by Ralf Baechle Sep 03, 2015

CLOCKSOURCE: mips-gic: Enable the clock before using it



For the clock to be used (e.g. get its rate through clk_get_rate)
it should be prepared and enabled first.

Also, while the clock is enabled the driver must hold a reference to it,
so let's remove the call to clk_put.

Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: James Hartley <James.Hartley@imgtec.com>
Cc: Govindraj Raja <Govindraj.Raja@imgtec.com>
Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Cc: James Hogan <James.Hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Patchwork: https://patchwork.linux-mips.org/patch/10779/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 1a3d5957

drivers/clocksource/mips-gic-timer.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -158,8 +158,13 @@ static void __init gic_clocksource_of_init(struct device_node *node)

		clk = of_clk_get(node, 0);
		if (!IS_ERR(clk)) {
		gic_frequency = clk_get_rate(clk);
		if (clk_prepare_enable(clk) < 0) {
		pr_err("GIC failed to enable clock\n");
		clk_put(clk);
		return;
		}

		gic_frequency = clk_get_rate(clk);
		} else if (of_property_read_u32(node, "clock-frequency",
		&gic_frequency)) {
		pr_err("GIC frequency not specified.\n");